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Giant Pacific octopus

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820:, which involves obvious changes in behavior and appearance, including a reduced appetite, retraction of skin around the eyes giving them a more pronounced appearance, increased activity in uncoordinated patterns, and white lesions all over the body. While the duration of this stage is variable, it typically lasts about one to two months. Despite active senescence primarily occurring over this period immediately following reproduction, research has shown that changes related to senescence may begin as early as the onset of reproductive behavior. In early stages of senescence, which begins as the octopus enters the stage of reproduction, hyper-sensitivity is noted where individuals overreact to both noxious and non-noxious touch. As they enter late senescence, insensitivity is observed along with the dramatic physical changes described above. Changes in sensitivity to touch are attributed to decreasing cellular density in nerve and epithelial cells as the nervous system degrades. Death is typically attributed to starvation, as the females have stopped hunting in order to protect their eggs; males often spend more time in the open, making them more likely to be preyed upon. 903: 724: 780:
very few survive to adulthood. Their growth rate is quite rapid: starting from 0.03 g (0.0011 oz) and growing to 20–40 kg (44–88 lb) at adulthood, which is an increase of around 0.9% per day. The giant Pacific octopus' growth over the course of a year has two sections: a faster section, from July to December, and a slower section, from January to June. Because they are cool-blooded, they are able to use most of their consumed energy for body mass, respiration, physical activity, and reproduction. During reproduction, the male octopus deposits a
570:) up to 1.2 m (4 ft) in length while in captivity. Additionally, consumed carcasses of this same shark species have been found in giant Pacific octopus middens in the wild, providing strong evidence of these octopuses preying on small sharks in their natural habitat. In May 2012, amateur photographer Ginger Morneau was widely reported to have photographed a wild giant Pacific octopus attacking and drowning a seagull, demonstrating that this species is not above eating any available source of food within its size range, even birds. 1038:. Lower trophic levels include all prey items, and may fluctuate inversely with octopus abundance. Higher trophic levels include all predators of octopuses, and may fluctuate with octopus abundance, although many may prey upon a variety of organisms. Protection of other threatened species may affect octopus populations (the sea otter, for example), as they may rely on octopuses for food. Some research suggests that fishing other species has aided octopus populations, by taking out predators and competitors. 510: 235: 952: 796: 943:. Normal levels are measured at 7–9 ppm. Fish and octopuses move from the deep towards the shallow water for more oxygen. Females do not leave, and die with their eggs at nesting sites. Warming seawater temperatures promote phytoplankton growth, and annual dead zones have been found to be increasing in size. To avoid these dead zones, octopuses must move to shallower waters, which may be warmer in temperature and less oxygen-rich, trapping them between two low-oxygen zones. 737: 106: 50: 81: 498: 967:, where they are often preyed upon by birds, fish, and other plankton feeders. Quicker hatching time may also affect critical timing for food availability. One study found that higher water temperatures accelerated all aspects of reproduction and even shortened lifespan by up to 20%. Other studies concur that warming climate scenarios should result in higher embryo and paralarvae mortalities. 894:, in order to accurately identify these species and help to prevent seafood fraud. Combined with lack of assessment and mislabeling, tracking the species's abundance is nearly impossible. Scientists have relied on catch numbers to estimate stock abundance, but the animals are solitary and difficult to find. Sites like The Monterey Bay Aquarium 829:
water, changing body texture, and other behaviors that are consistently demonstrated to specific individuals. They have the ability to solve simple puzzles, open childproof bottles, and use tools. The octopus brain has folded lobes (a distinct characteristic of complexity) and visual and tactile memory centers. They have about 300 million
1003:). Calcifying organisms use calcium carbonate to produce shells, skeletons, and tests. The prey base that octopuses prefer (crab, clams, scallops, mussels, etc.) are negatively impacted by ocean acidification, and may decrease in abundance. Shifts in available prey may force a change in octopus diets to other, nonshelled organisms. 788:(specialized arm) in the female's mantle. The hectocotylus is found on the third arm of male octopuses and occupies the last four inches of the arm. This part of the male arm anatomy contains no suckers. Large spermatophores are characteristic of octopuses in this genus. The female stores the spermatophore in her 920:) and not an efficient oxygen carrier, octopuses favor and move toward cooler, oxygen-rich water. This dependency limits octopus habitat, typically to temperate waters 8–12 °C (46–54 °F). If seawater temperatures continue to rise, these organisms may be forced to move to deeper, cooler water. 693:
are den dwellers, which serve as a central point from when they forage while also providing protection, shelter, and privacy. After hunting, they bring food back to the den to feed in a safer environment and avoid predators. Shells, bones, and other feeding debris pile up outside of the den, creating
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Octopuses are ranked as the most intelligent invertebrates. Giant Pacific octopuses are commonly kept on display at aquariums due to their size and interesting physiology, and have demonstrated the ability to recognize humans with whom they frequently come in contact. These responses include jetting
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in giant Pacific octopuses, where males and females mate with multiple partners. This multiple paternity potentially allows females to increase the odds of at least one of the males she mates with producing fit offspring. After mating, both the males and females stop eating and ultimately die. After
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the female stays close to her spawn, never leaving to feed, leading to her death soon after the young have hatched. The female's death is the result of starvation, as she subsists on her own body fats during this period of approximately 6 months. Hatchlings are about the size of a grain of rice, and
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are also confirmed predators of this species. In addition, the octopus (along with cuttlefish and squid) is a significant source of protein for human consumption. About 3.3 million tonnes (3.6 million short tons) are commercially fished, worth $ 6 billion annually. Over thousands of years,
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Dens range across depth and substratum type including caves, holes dug beneath rock, and even trash on the ocean floor such as bottles, tires, pipes, and barrels. Den selection is greatly influenced by foraging behavior and preferred prey. Dens made of soft substrata may be preferred in areas where
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cover and rocky terrain suggesting a sophisticated level of habitat selection, likely optimizing foraging efficiency and minimizing exposure to predators. Furthermore, their movement patterns include direct relocations to new areas and central-tendency movements to return to familiar habitats. This
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Octopuses have been found to migrate for a variety of reasons. Using tag and recapture methods, scientists found they move from den to den in response to decreased food availability, change in water quality, increase in predation, or increased population density (or decreased available habitat/den
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is an issue in the seafood industry, with species names being switched by accident or on purpose, as in the case of using the name of a more expensive species for a cheaper one. Cephalopods, in particular, lose distinguishing characteristics during food processing, making them much harder to
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In Puget Sound, the Washington Fish and Wildlife Commission adopted rules for protecting the harvest of giant Pacific octopuses at seven sites, after a legal harvest caused a public outcry. Populations in Puget Sound are not considered threatened.
854:. DNA techniques have assisted in genetic and phylogenetic analysis of the species' evolutionary past. Following its DNA analysis, the giant Pacific octopus may actually prove to be three subspecies (one in Japan, another in Alaska, and a third in 1026:. These crabs bury themselves in contaminated sediments and eat prey that live nearby. What effects these toxins have on octopuses are unknown, but other exposed animals have been known to show liver damage, changes in immune systems, and death. 869:
may affect these organisms in different ways. Climate change is complex, with predicted biotic and abiotic changes to multiple processes including oxygen limitation, reproduction, ocean acidification, toxins, effects on other trophic levels, and
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remain stationary or in hiding 94% of the time, usually concealed within dens, kelp, or camouflaged in their environment. Otherwise, they exhibit activity throughout the day, increasingly so from midnight to the early morning. While stationary,
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Unlike most other octopus species, whose lifespans normally span only one year, the giant Pacific octopus has a lifespan of three to five years. They reach sexual maturity at one to two years of age. Gonadal maturation has been linked to the
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prefer to occupy same shelter for at least one month, often longer if possible. It is common for these octopus to leave their den for short periods of time and eventually return to re-use the same den. However, over longer periods of time,
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can help people to responsibly consume seafood, including the giant Pacific octopus. Seafood Watch lists giant Pacific octopus in either the "Buy" or "Buy, but be aware of concerns" categories depending on the geographical location of the
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found that the largest suckers on a giant Pacific octopus are about 6.4 cm (2.5 in) and can support 16 kg (35 lb) each. The only other possible contender for the largest species of octopus is the
1205: 833:. They have been known to open tank valves, disassemble expensive equipment, and generally wreak havoc in labs and aquaria. Some researchers even claim that they are capable of motor play and having personalities. 654:
are capable of moving vast distances to occupy new areas or habitats, with large octopuses moving further than smaller ones. Their movements are not random; they demonstrate a preference for habitats with dense
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are abundant while dens near rocky areas might be chosen in areas with higher crab populations. The size of the den is small, usually being just large enough for the octopus to fit inside and turn around.
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migrate to shallower waters in the early summer and winter and offshore in the late summer and winter. There is no evidence of these migration patterns in the Alaskan and northeast Pacific populations of
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Because octopuses have hemocyanin as copper-based blood, a small change in pH can reduce oxygen-carrying capacity. A pH change from 8.0 to 7.7 or 7.5 will have life-or-death effects on cephalopods.
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migration patterns vary depending on the population. In the eastern Pacific waters off the coast of Japan, migration coincides with seasonal temperature changes in the winter and summer. Here,
2668:"Development of a multiplex PCR assay for the simultaneous detection of big blue octopus (Octopus cyanea), giant Pacific octopus (Enteroctopus dofleini), and common octopus (Octopus vulgaris)" 1644: 558:
preys on shrimp, crabs, scallops, abalones, cockles, snails, clams, lobsters, fish, squid, and other octopuses. Food is procured with its suckers and then bitten using its tough beak of
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Scheel, D.; Anderson, R. (2012). "Variability in the diet specialization of Enteroctopus dofleini (Cephalopoda: Octopodidae) in the eastern Pacific examined from midden contents".
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Scavengers and other organisms often attempt to eat octopus eggs, even when the female is present to protect them. Giant Pacific octopus paralarvae are preyed upon by many other
2365:"Multiple Paternity and Preliminary Population Genetics of Giant Pacific Octopuses, Enteroctopus dofleini, in Oregon, Washington and the Southeast Coast of Vancouver Island, BC" 1423: 1213: 886:
identify. One study developed a multiplex PCR assay to distinguish between three prevalent octopus species in the Eastern Pacific, namely, the giant Pacific octopus, the
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span up to 4.3 m (14 ft). Some larger individuals have weighed-in at 50 kg (110 lb), with a radial span of 6 m (20 ft). American zoologist
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is intensively cared for exclusively by the female, who continuously blows water over it and grooms it to remove algae and other growths. While she fulfills her duty of
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Holst, Meghan M.; Hauver, Camille M.; Stein, Rachel S.; Milano, Bianca L.; Levine, Lindsey H.; Zink, Andrew G.; Watters, Jason V.; Crook, Robyn J. (September 2022).
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until she is ready to fertilize her eggs. One female at the Seattle Aquarium was observed to retain a spermatophore for seven months before laying fertilized eggs.
639:, creating a powerful thrust and propelling the octopus through the water at a high speed. When moving on the seafloor, however, the octopus crawls using its arms. 4370: 4255: 2409:"Behavioral changes in senescent giant Pacific octopus (Enteroctopus dofleini) are associated with peripheral neural degeneration and loss of epithelial tissue" 1625: 4335: 2574: 939:. As these micro-organisms decompose, oxygen is used up in the process and has been measured to be as low as 2 parts per million (ppm). This is a state of 1605: 767:
To help compensate for its relatively short lifespan, the octopus is extremely prolific. It can lay between 120,000 and 400,000 eggs which are coated in
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Increased seawater temperatures also increase metabolic processes. The warmer the water, the faster octopus eggs develop and hatch. After hatching, the
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is distinguished from other species by its large size. It is the largest octopus species. Adults usually weigh around 15 kg (33 lb), with an
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move through the open water using jet propulsion, which is achieved by drawing water into its body cavity and then forcefully expelling it through a
4177: 4216: 2050:"Design of experimental food patches to measure foraging intensity for octopus: a case study with the giant Pacific octopus Enteroctopus dofleini" 1685: 2252: 1229:"Characterization of Current Husbandry and Veterinary Care Practices of the Giant Pacific Octopus (Enteroctopus dofleini) Using an Online Survey" 4345: 711:
beak size determines the size of the space it can fit inside, with its body being able to compress through tiny spaces as small as two inches.
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play an important role in maintaining the health and biodiversity of deep sea ecosystems, cognitive research, and the fishing industry.
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Repolho, Tiago (2014). "Developmental and physiological challenges of octopus (Octopus vulgaris) early life stages under ocean warming".
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Andre, J; Haddon, M.; Pecl, G.T. (2010). "Modeling climate-change induced nonlinear thresholds in cephalopod population dynamics".
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down to 2,000 m (6,600 ft), and is best-adapted to colder, oxygen- and nutrient-rich waters. It is the largest
4365: 1292:. Vol. Bd.3:1 (1910). München: Verlag der K.B. Akademie der Wissenschaften in Kommission des G. Franzschen Verlags. 723: 1643:
Sigler, M. F.; L. B. Hulbert; C. R. Lunsford; N. H. Thompson; K. Burek; G. O'Corry-Crowe; A. C. Hirons (24 July 2006).
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cause increased carbon dioxide levels in the atmosphere. The ocean absorbs an estimated 30% of emitted anthropogenic CO
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identified in octopuses, and their secretions have been found to contribute to behaviors linked with reproduction and
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Mather, J. A.; Kuba, M. J. (2013). "The cephalopod specialties: complex nervous system, learning and cognition".
2090: 608: 807:, meaning they only go through one breeding cycle in their life. Analysis of egg clutches has shown evidence of 603:
humans have caught them using lures, spears, pot traps, nets, and bare hands. The octopus is parasitized by the
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Guinotte, J. M.; Fabry, V. J. (2008). "Ocean acidification and its potential effects on marine ecosystems".
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Mather, J. A.; Resler, S.; Cosgrove, J. A. (1985). "Activity and Movement patterns of Octopus dofleini".
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species on earth and can often be found in aquariums and research facilities in addition to the ocean.
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Anderson, R. C.; Wood, J. B.; Byrne, R. A. (2002). "Octopus Senescence: The Beginning of the End".
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Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and the Western Santa Barbara Channel
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The giant Pacific octopus was first described in 1910 by Gerhard Wülker of Leipzig University in
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Gazeau, F.; Quiblier, C.; Jansen, J. M.; Gattuso, J. P.; Middelburg, J. J.; Heip, C. H. (2007).
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in tissues and digestive glands, which may have come from these octopus' preferred prey, the
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Kirby, Ashley J.; Balko, Julie A.; Goertz, Caroline E. C.; Lewbart, Gregory A. (July 2023).
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relocate to new dens situated relatively nearby, within an average distance of 13.2 meters.
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showing one of the eyes, the longitudinal folds on the body and the paddle-like papillae
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Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
2295: 2230: 1935: 1562: 891: 887: 429: 425: 49: 4329: 4229: 4045: 3946: 3839: 3832: 3752: 3624: 3619: 3421: 3416: 3411: 3377: 3329: 3309: 3043: 2824: 1681: 1102: 1071: 1035: 928: 895: 851: 781: 776: 583: 563: 397: 90: 85: 17: 3090: 2986: 2882: 2832: 2559: 2493: 1868:"Movement patterns of giant Pacific octopuses, Enteroctopus dofleini (Wülker, 1910)" 1781: 1477: 1093: 3692: 3214: 2925: 976: 785: 530: 485: 437: 388: 177: 2645: 1468: 1447: 1287: 497: 2543: 2477: 2145: 1336:
Wülker, 1910 new combination". In Valentich Scott, Paul; Blake, James A. (eds.).
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Convention on International Trade in Endangered Species of Wild Fauna and Flora
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Chancellor, Stephanie; Scheel, David; Brown, Joel S (13 February 2021).
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AZA Aquatic Invertebrate Taxon Advisory Group (AITAG) (September 2014).
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Walla Walla University Marine Invertebrates Key: Giant Pacific Octopus
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navigation behavior is influenced by the use of familiar cliff edges,
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Alves, Christelle; Boal, Jean G.; Dickel, Ludovic (1 November 2008).
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Potential changes in octopus populations will affect upper and lower
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of octopuses which has been compared functionally to the vertebrate
694:"den litter" that is commonly used by scientists and divers to find 3963: 3772: 3722: 3611: 3282: 3123: 2363:
Larson, Shawn; Ramsay, Catherine; Cosgrove, James A. (June 2015).
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Giant Pacific octopuses are not currently under the protection of
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family. Its spatial distribution encompasses much of the coastal
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Researchers have found high concentrations of heavy metals and
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lowers available carbonate ions, which is a building block for
1964:"Den utilization and the movements of tagged Octopus dofleini" 2623: 865:
Regardless of these data gaps in abundance estimates, future
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Lee, Yu-Min; Lee, Ga-Young; Kim, Hae-Yeong (1 April 2022).
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depend upon the giant Pacific octopus as a source of food.
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Vincent, T. L. S.; Scheel, D.; Hough, K. R. (March 1998).
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was chosen by Gerhard Wülker in honor of German scientist
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Anderson, R. C. (2005). "How smart are octopuses?".
771:, and attached to a hard surface by the female. The 4088: 4033: 3999: 3962: 3912: 3889: 3880: 3849: 3815: 3780: 3771: 3721: 3691: 3638: 3610: 3541: 3532: 3476: 3397: 3343: 3300: 3168: 3159: 3002:"Impact of elevated CO2 on shellfish calcification" 2278:Robinson, S. M. C.; Hartwick, E. B. 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Archived from 1801: 1799: 1797: 1795: 1793: 1791: 1328:Hochberg, Frederick (Eric) George (1998). " 991:, it becomes more acidic and lowers in pH. 4076: 3886: 3777: 3538: 3165: 3146: 3132: 3124: 2941:Annals of the New York Academy of Sciences 2646:"Giant Pacific Octopus Rulemaking Process" 2253:"Giant Pacific Octopus (Octopus dofleini)" 1716: 1714: 1712: 1710: 1708: 1706: 1704: 1702: 1700: 1698: 1385:"Name Change of the Giant Pacific Octopus" 1150: 1148: 1146: 1144: 1142: 1140: 1138: 1136: 1134: 1092:Allcock, L.; Taite, M.; Allen, G. (2018). 233: 79: 48: 31: 3033: 2960: 2750:Journal of Marine Behavior and Physiology 2699: 2532:Journal of Applied Animal Welfare Science 2467: 2456:Journal of Applied Animal Welfare Science 2380: 1763: 1671: 1523:"ADW: Enteroctopus dofleini: INFORMATION" 1467: 1286:Wülker, Gerhard; Wülker, Gerhard (1910). 1262: 1244: 1115: 2798: 2796: 2779:. Portland. London.: J.B. Timber Press. 2231:"Giant Pacific Octopus by Shawn Laidlaw" 1157:Super Suckers, The Giant Pacific octopus 64:, at a depth of 65 m (213 ft) 1410:Northwest Wildlife Preservation Society 1184:"Giant Pacific Octopus Species Profile" 1063: 2115: 2113: 2111: 1957: 1955: 1953: 444:'s Pacific east coast, and around the 2846:Forsythe, J.W.; Hanlon, R.T. (1988). 2724:"Monterey Bay Aquarium Seafood Watch" 2402: 2400: 1866:Scheel, D.; Bisson, L. (April 2012). 1303:Hansson, Hans G. (14 November 1997). 1199: 1197: 727:Takoyaki stall in Nishi-Magome, Tokyo 562:. It has also been observed to catch 7: 4371:Western North American coastal fauna 2120:Wodinsky, Jerome (2 December 1977). 1428:Smithsonian National Zoological Park 1383:Anderson, Roland C. (January 2001). 4336:IUCN Red List least concern species 2898:Journal of Comparative Physiology B 1806:High, William L. (September 1976). 1521:Hartis, Colleen (2 February 2011). 1497: – a giant gelatinous octopus" 1103:IUCN Red List of Threatened Species 2345:. Hackenheim, ConchBooks, p. 214. 2329:National Sea Grant College Program 2296:10.1111/j.1469-7998.1986.tb03611.x 1936:10.1111/j.1439-0485.1998.tb00450.x 1721:Courage, Katherine Harmon (2013). 1188:Alaska Department of Fish and Game 963:swim to the surface to join other 756:. These optic glands are the only 25: 3108:"CephBase: Giant Pacific octopus" 404:, north along the United States' 2825:10.1111/j.1365-2486.2010.02223.x 1682:10.1111/j.1095-8649.2006.01096.x 927:, a habitat for many octopuses, 104: 3071:American Malacological Bulletin 2575:"Through the Eye of an Octopus" 1968:Marine Behaviour and Physiology 1748:"Biology of Dicyemid Mesozoans" 1030:Effects on other trophic levels 837:Conservation and climate change 2672:Food Science and Biotechnology 1624:Young, Gayne C. (8 May 2012). 1583:. Google Video. Archived from 1549:Giant Pacific Octopus - Oceana 1456:New Zealand Journal of Zoology 799:Hectocotylus arm of an octopod 668:as well as visual navigation. 1: 4346:Molluscs of the Pacific Ocean 1563:"Giant Pacific octopus facts" 1469:10.1080/03014223.2004.9518353 1204:Graves, Mark (23 June 2023). 4356:Cephalopods of North America 3006:Geophysical Research Letters 2544:10.1080/10888705.2010.483892 2478:10.1207/S15327604JAWS0504_02 2146:10.1126/science.198.4320.948 2054:Journal of Molluscan Studies 400:, from the Mexican state of 2594:Canadian Journal of Zoology 2205:"Giant Octopus: Fact Sheet" 1880:10.1016/j.jembe.2012.02.004 1808:"The Giant Pacific Octopus" 1394:. Vol. 32. p. 46. 609:Dicyemodeca anthinocephalum 448:. It can be found from the 377:North Pacific giant octopus 4392: 4376:Molluscs described in 1910 2684:10.1007/s10068-022-01051-w 2425:10.1016/j.cbpa.2022.111263 2343:Cephalopods: A World Guide 1725:. USA: The Penguin Group. 1159:. BC: Harbour Publishing. 923:Each fall in Washington's 586:. Marine mammals, such as 489:by Eric Hochberg in 1998. 4064: 3648:Black-foot opihi/Hawaiian 2910:10.1007/s00360-013-0783-y 2762:10.1080/10236248509387055 2019:10.1007/s10339-007-0192-9 1980:10.1080/10236248409387038 987:. As the ocean absorbs CO 816:reproduction, they enter 732:Lifespan and reproduction 305:Octopus dofleini apollyon 289:Octopus dofleini dofleini 261: 254: 241: 232: 206: 199: 101:Scientific classification 99: 77: 68: 56: 47: 34: 3519:Placopecten magellanicus 3363:New Zealand green-lipped 1363:"Giant Pacific Octopus ( 1155:Cosgrove, James (2009). 867:climate change scenarios 483:. It was moved to genus 353:Octopus dofleini martini 244:     4351:Marine molluscs of Asia 4024:Acanthopleura granulata 3593:(group of four species) 2971:10.1196/annals.1439.013 1833:"Giant Pacific Octopus" 1815:Marine Fisheries Review 1652:Journal of Fish Biology 1611:14 January 2009 at the 1545:"Giant Pacific Octopus" 1424:"Giant Pacific Octopus" 62:Point Piños, California 4017:Acanthopleura echinata 3927:Atlantic white-spotted 3378:Asian/Philippine green 2775:Mather, J. A. (2010). 2320:Flory, Eileen (2007). 2255:. NPCA. Archived from 2066:10.1093/mollus/eyaa039 1246:10.3390/vetsci10070448 956: 907: 800: 744: 728: 600:Pacific sleeper sharks 514: 506: 4134:Enteroctopus_dofleini 4120:Enteroctopus dofleini 4090:Enteroctopus dofleini 3953:Amphioctopus fangsiao 3597:South African abalone 3469:("true oyster" genus) 3235:California butterclam 2805:Global Change Biology 2606:10.1139/cjz-2013-0009 1837:Monterey Bay Aquarium 1821:(9) – via NOAA. 1525:. Animaldiversity.org 1365:Enteroctopus dofleini 1334:Enteroctopus dofleini 1096:Enteroctopus dofleini 954: 906:Giant Pacific octopus 905: 798: 741:Enteroctopus dofleini 739: 726: 620:, which lives in its 512: 500: 481:Franz Theodor Doflein 375:), also known as the 372:Enteroctopus dofleini 367:giant Pacific octopus 246:  range of 210:Enteroctopus dofleini 35:Giant Pacific octopus 27:Species of cephalopod 18:Enteroctopus dofleini 3678:Ribbed Mediterranean 3193:Grooved carpet shell 3083:10.4003/006.030.0206 3026:10.1029/2006gl028554 2728:www.seafoodwatch.org 2007:Cognitive Processing 1581:"Octopus Eats Shark" 1495:Haliphron atlanticus 1450:Haliphron atlanticus 1434:on 23 February 2014. 1110:: e.T162958A958049. 878:The seafood industry 850:or evaluated in the 540:Haliphron atlanticus 379:, is a large marine 321:Octopus gilbertianus 313:Polypus gilbertianus 4366:Fauna of California 3673:Rayed Mediterranean 3267:Japanese littleneck 3119:The Cephalopod Page 3050:on 12 November 2012 3018:2007GeoRL..34.7603G 2953:2008NYASA1134..320G 2867:1988MarBi..98..369F 2817:2010GCBio..16.2866A 2259:on 21 November 2008 2211:on 15 November 2012 2183:caseagrant.ucsd.edu 2138:1977Sci...198..948W 2095:www.adfg.alaska.gov 1928:1998MarEc..19...13V 1664:2006JFBio..69..392S 1569:. 21 February 2018. 1504:Biodiversity Update 1491:O'Shea, S. (2002). 1448:"The giant octopus 1446:O'Shea, S. (2004). 1233:Veterinary Sciences 993:Ocean acidification 971:Ocean acidification 513:Close-up of suckers 71:Conservation status 4046:Land snail farming 3460:Gillardeau oysters 3178:Atlantic jackknife 3114:on 17 August 2005. 2875:10.1007/bf00391113 2581:on 26 August 2020. 2284:Journal of Zoology 1874:. 416–417: 21–31. 1765:10.2108/zsj.20.519 1752:Zoological Science 1587:on 7 February 2006 957: 908: 801: 745: 729: 515: 507: 4361:Molluscs of Japan 4323: 4322: 4282:Open Tree of Life 4082:Taxon identifiers 4073: 4072: 4051:Gastropod anatomy 4010:Chiton magnificus 3995: 3994: 3972:New Zealand arrow 3876: 3875: 3872: 3871: 3747:Kelletia lischkei 3712:Littorina sitkana 3658:Yellow-foot opihi 3528: 3527: 3422:Colchester native 2811:(10): 2866–2875. 2786:978-1-60469-067-5 2341:Norman, M. 2000. 2233:. 3 November 2020 2132:(4320): 948–951. 1732:978-1-59184-527-0 1166:978-1-55017-466-3 1048:Octopus wrestling 997:calcium carbonate 935:die and create a 911:Oxygen limitation 628:Movement patterns 568:Squalus acanthias 536:seven-arm octopus 383:belonging to the 363: 362: 357: 349: 341: 333: 325: 317: 309: 301: 293: 285: 277: 269: 265:Octopus punctatus 94: 16:(Redirected from 4383: 4316: 4315: 4303: 4302: 4290: 4289: 4277: 4276: 4264: 4263: 4251: 4250: 4238: 4237: 4225: 4224: 4212: 4211: 4199: 4198: 4186: 4185: 4173: 4172: 4160: 4159: 4147: 4146: 4137: 4136: 4124: 4123: 4122: 4109: 4108: 4107: 4077: 3887: 3801:Chorus giganteus 3778: 3539: 3502:Pecten jacobaeus 3209:Mactra stultorum 3166: 3148: 3141: 3134: 3125: 3115: 3110:. Archived from 3095: 3094: 3066: 3060: 3059: 3057: 3055: 3046:. Archived from 3037: 2997: 2991: 2990: 2964: 2936: 2930: 2929: 2893: 2887: 2886: 2852: 2843: 2837: 2836: 2800: 2791: 2790: 2772: 2766: 2765: 2745: 2739: 2738: 2736: 2734: 2720: 2714: 2713: 2703: 2663: 2657: 2656: 2654: 2652: 2642: 2636: 2635: 2633: 2631: 2622:. Archived from 2616: 2610: 2609: 2589: 2583: 2582: 2577:. Archived from 2573:Tzar, Jennifer. 2570: 2564: 2563: 2523: 2517: 2516: 2504: 2498: 2497: 2471: 2451: 2445: 2444: 2404: 2395: 2394: 2384: 2382:10.3390/d7020195 2360: 2354: 2339: 2333: 2332: 2326: 2317: 2308: 2307: 2275: 2269: 2268: 2266: 2264: 2249: 2243: 2242: 2240: 2238: 2227: 2221: 2220: 2218: 2216: 2200: 2194: 2193: 2191: 2189: 2175: 2166: 2165: 2117: 2106: 2105: 2103: 2101: 2084: 2078: 2077: 2045: 2039: 2038: 1998: 1992: 1991: 1959: 1948: 1947: 1907: 1892: 1891: 1863: 1848: 1847: 1845: 1843: 1829: 1823: 1822: 1812: 1803: 1786: 1785: 1767: 1743: 1737: 1736: 1718: 1693: 1692: 1690: 1684:. Archived from 1675: 1649: 1640: 1634: 1633: 1621: 1615: 1603: 1597: 1596: 1594: 1592: 1577: 1571: 1570: 1559: 1553: 1552: 1541: 1535: 1534: 1532: 1530: 1518: 1512: 1511: 1501: 1488: 1482: 1481: 1471: 1443: 1437: 1435: 1430:. Archived from 1420: 1414: 1413: 1402: 1396: 1395: 1392:Drum And Croaker 1389: 1380: 1374: 1373: 1371: 1358: 1352: 1351: 1325: 1319: 1318: 1316: 1314: 1300: 1294: 1293: 1283: 1277: 1276: 1266: 1248: 1224: 1218: 1217: 1216:on 24 June 2023. 1212:. Archived from 1201: 1192: 1191: 1180: 1171: 1170: 1152: 1129: 1128: 1126: 1124: 1119: 1089: 1083: 1082: 1080: 1078: 1068: 1022:Cancer productus 981:land-use changes 888:big blue octopus 758:endocrine glands 622:renal appendages 619: 446:Korean Peninsula 428:), south to the 418:Russian Far East 414:British Columbia 410:Aleutian Islands 394:Enteroctopodidae 355: 348:Akimushkin, 1963 347: 345:Paroctopus asper 339: 331: 329:Octopus apollyon 323: 315: 307: 299: 297:Polypus apollyon 291: 283: 281:Polypus dofleini 275: 273:Octopus dofleini 267: 250: 245: 237: 226: 212: 192:E. dofleini 168:Enteroctopodidae 109: 108: 88: 83: 82: 52: 38:Temporal range: 32: 21: 4391: 4390: 4386: 4385: 4384: 4382: 4381: 4380: 4326: 4325: 4324: 4319: 4311: 4306: 4298: 4293: 4285: 4280: 4272: 4267: 4259: 4254: 4246: 4241: 4233: 4228: 4220: 4215: 4207: 4202: 4194: 4189: 4181: 4176: 4168: 4163: 4155: 4150: 4142: 4140: 4132: 4127: 4118: 4117: 4112: 4103: 4102: 4097: 4084: 4074: 4069: 4060: 4056:Bivalve anatomy 4029: 3991: 3977:Japanese flying 3958: 3908: 3868: 3845: 3811: 3767: 3717: 3687: 3668:Common European 3634: 3606: 3524: 3508:Peruvian calico 3472: 3393: 3390:(mussel family) 3339: 3296: 3241:Senilia senilis 3155: 3154:Edible mollusks 3152: 3106: 3103: 3098: 3068: 3067: 3063: 3053: 3051: 2999: 2998: 2994: 2962:10.1.1.316.7909 2938: 2937: 2933: 2895: 2894: 2890: 2850: 2845: 2844: 2840: 2802: 2801: 2794: 2787: 2774: 2773: 2769: 2747: 2746: 2742: 2732: 2730: 2722: 2721: 2717: 2665: 2664: 2660: 2650: 2648: 2644: 2643: 2639: 2629: 2627: 2626:on 27 June 2014 2618: 2617: 2613: 2591: 2590: 2586: 2572: 2571: 2567: 2525: 2524: 2520: 2506: 2505: 2501: 2469:10.1.1.567.3108 2453: 2452: 2448: 2406: 2405: 2398: 2362: 2361: 2357: 2340: 2336: 2324: 2319: 2318: 2311: 2277: 2276: 2272: 2262: 2260: 2251: 2250: 2246: 2236: 2234: 2229: 2228: 2224: 2214: 2212: 2203:Scheel, David. 2202: 2201: 2197: 2187: 2185: 2177: 2176: 2169: 2119: 2118: 2109: 2099: 2097: 2086: 2085: 2081: 2047: 2046: 2042: 2000: 1999: 1995: 1961: 1960: 1951: 1909: 1908: 1895: 1865: 1864: 1851: 1841: 1839: 1831: 1830: 1826: 1810: 1805: 1804: 1789: 1745: 1744: 1740: 1733: 1720: 1719: 1696: 1691:on 29 May 2010. 1688: 1673:10.1.1.330.8593 1647: 1642: 1641: 1637: 1623: 1622: 1618: 1613:Wayback Machine 1604: 1600: 1590: 1588: 1579: 1578: 1574: 1561: 1560: 1556: 1543: 1542: 1538: 1528: 1526: 1520: 1519: 1515: 1499: 1490: 1489: 1485: 1445: 1444: 1440: 1422: 1421: 1417: 1404: 1403: 1399: 1387: 1382: 1381: 1377: 1369: 1360: 1359: 1355: 1348: 1327: 1326: 1322: 1312: 1310: 1302: 1301: 1297: 1285: 1284: 1280: 1226: 1225: 1221: 1203: 1202: 1195: 1182: 1181: 1174: 1167: 1154: 1153: 1132: 1122: 1120: 1091: 1090: 1086: 1076: 1074: 1070: 1069: 1065: 1061: 1053:Cephalopod size 1044: 1032: 1020:red rock crab ( 1012: 1002: 990: 986: 975:The burning of 973: 949: 913: 880: 844: 839: 826: 754:pituitary gland 734: 688: 630: 613: 576: 553: 548: 520: 495: 470:Über Japanische 466: 450:intertidal zone 402:Baja California 337:Octopus madokai 243: 242: 228: 220: 214: 208: 195: 103: 95: 84: 80: 73: 43: 36: 28: 23: 22: 15: 12: 11: 5: 4389: 4387: 4379: 4378: 4373: 4368: 4363: 4358: 4353: 4348: 4343: 4338: 4328: 4327: 4321: 4320: 4318: 4317: 4304: 4291: 4278: 4265: 4252: 4239: 4226: 4213: 4200: 4187: 4174: 4161: 4148: 4138: 4125: 4110: 4094: 4092: 4086: 4085: 4080: 4071: 4070: 4065: 4062: 4061: 4059: 4058: 4053: 4048: 4043: 4041:Oyster farming 4037: 4035: 4034:Related topics 4031: 4030: 4028: 4027: 4020: 4013: 4005: 4003: 3997: 3996: 3993: 3992: 3990: 3989: 3984: 3979: 3974: 3968: 3966: 3960: 3959: 3957: 3956: 3949: 3944: 3939: 3934: 3929: 3924: 3918: 3916: 3910: 3909: 3907: 3906: 3901: 3895: 3893: 3884: 3878: 3877: 3874: 3873: 3870: 3869: 3867: 3866: 3861: 3855: 3853: 3847: 3846: 3844: 3843: 3836: 3829: 3826:Cornu aspersum 3821: 3819: 3813: 3812: 3810: 3809: 3804: 3797: 3792: 3786: 3784: 3775: 3769: 3768: 3766: 3765: 3760: 3755: 3750: 3743: 3738: 3733: 3727: 3725: 3719: 3718: 3716: 3715: 3708: 3703: 3697: 3695: 3689: 3688: 3686: 3685: 3680: 3675: 3670: 3665: 3660: 3655: 3650: 3644: 3642: 3636: 3635: 3633: 3632: 3627: 3622: 3616: 3614: 3608: 3607: 3605: 3604: 3599: 3594: 3588: 3583: 3578: 3573: 3568: 3563: 3558: 3553: 3547: 3545: 3536: 3530: 3529: 3526: 3525: 3523: 3522: 3515: 3510: 3505: 3498: 3493: 3488: 3482: 3480: 3474: 3473: 3471: 3470: 3462: 3457: 3449: 3444: 3439: 3434: 3429: 3424: 3419: 3414: 3409: 3403: 3401: 3395: 3394: 3392: 3391: 3385: 3380: 3375: 3370: 3365: 3360: 3355: 3349: 3347: 3341: 3340: 3338: 3337: 3335:Giant Atlantic 3332: 3327: 3322: 3317: 3312: 3306: 3304: 3298: 3297: 3295: 3294: 3287: 3279: 3274: 3269: 3264: 3259: 3257:Triangle shell 3254: 3249: 3244: 3237: 3232: 3227: 3222: 3217: 3212: 3205: 3200: 3195: 3190: 3185: 3180: 3174: 3172: 3163: 3157: 3156: 3153: 3151: 3150: 3143: 3136: 3128: 3122: 3121: 3116: 3102: 3101:External links 3099: 3097: 3096: 3077:(2): 267–279. 3061: 2992: 2947:(1): 320–342. 2931: 2888: 2861:(3): 369–379. 2855:Marine Biology 2838: 2792: 2785: 2767: 2740: 2715: 2678:(4): 497–504. 2658: 2637: 2611: 2600:(6): 431–449. 2584: 2565: 2538:(3): 261–272. 2518: 2509:Coral Magazine 2499: 2462:(4): 275–283. 2446: 2396: 2375:(2): 195–205. 2355: 2334: 2309: 2290:(4): 559–572. 2270: 2244: 2222: 2195: 2167: 2107: 2079: 2040: 2013:(4): 239–247. 1993: 1949: 1916:Marine Ecology 1893: 1849: 1824: 1787: 1758:(5): 519–532. 1738: 1731: 1694: 1658:(2): 392–405. 1635: 1616: 1598: 1572: 1554: 1536: 1513: 1483: 1438: 1415: 1397: 1375: 1367:) Care Manual" 1353: 1346: 1320: 1295: 1278: 1219: 1193: 1172: 1165: 1130: 1084: 1062: 1060: 1057: 1056: 1055: 1050: 1043: 1040: 1036:trophic levels 1031: 1028: 1011: 1008: 1000: 988: 984: 972: 969: 948: 945: 912: 909: 892:common octopus 879: 876: 843: 840: 838: 835: 825: 822: 733: 730: 687: 684: 629: 626: 584:filter feeders 575: 572: 552: 549: 547: 544: 519: 516: 494: 491: 465: 462: 430:East China Sea 426:Sea of Okhotsk 361: 360: 359: 358: 356:Pickford, 1964 350: 342: 334: 326: 318: 310: 302: 294: 292:(Wülker, 1910) 286: 278: 270: 259: 258: 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3938: 3937:Pacific giant 3935: 3933: 3930: 3928: 3925: 3923: 3920: 3919: 3917: 3915: 3911: 3905: 3902: 3900: 3897: 3896: 3894: 3892: 3888: 3885: 3883: 3879: 3865: 3862: 3860: 3857: 3856: 3854: 3852: 3848: 3842: 3841: 3840:Helix pomatia 3837: 3835: 3834: 3833:Helix lucorum 3830: 3828: 3827: 3823: 3822: 3820: 3818: 3814: 3808: 3805: 3803: 3802: 3798: 3796: 3793: 3791: 3788: 3787: 3785: 3783: 3779: 3776: 3774: 3770: 3764: 3761: 3759: 3756: 3754: 3751: 3749: 3748: 3744: 3742: 3739: 3737: 3734: 3732: 3729: 3728: 3726: 3724: 3720: 3714: 3713: 3709: 3707: 3704: 3702: 3699: 3698: 3696: 3694: 3690: 3684: 3681: 3679: 3676: 3674: 3671: 3669: 3666: 3664: 3661: 3659: 3656: 3654: 3651: 3649: 3646: 3645: 3643: 3641: 3637: 3631: 3628: 3626: 3623: 3621: 3618: 3617: 3615: 3613: 3609: 3603: 3600: 3598: 3595: 3592: 3589: 3587: 3584: 3582: 3579: 3577: 3574: 3572: 3569: 3567: 3564: 3562: 3559: 3557: 3554: 3552: 3549: 3548: 3546: 3544: 3540: 3537: 3535: 3531: 3521: 3520: 3516: 3514: 3511: 3509: 3506: 3504: 3503: 3499: 3497: 3494: 3492: 3489: 3487: 3484: 3483: 3481: 3479: 3475: 3468: 3467: 3463: 3461: 3458: 3456: 3454: 3453:Ostra chilena 3450: 3448: 3445: 3443: 3440: 3438: 3435: 3433: 3430: 3428: 3425: 3423: 3420: 3418: 3415: 3413: 3410: 3408: 3405: 3404: 3402: 3400: 3396: 3389: 3386: 3384: 3381: 3379: 3376: 3374: 3371: 3369: 3366: 3364: 3361: 3359: 3358:Mediterranean 3356: 3354: 3351: 3350: 3348: 3346: 3342: 3336: 3333: 3331: 3328: 3326: 3323: 3321: 3318: 3316: 3313: 3311: 3308: 3307: 3305: 3303: 3299: 3293: 3292: 3288: 3286:(razor genus) 3285: 3284: 3280: 3278: 3275: 3273: 3270: 3268: 3265: 3263: 3260: 3258: 3255: 3253: 3250: 3248: 3245: 3243: 3242: 3238: 3236: 3233: 3231: 3228: 3226: 3225:Pacific razor 3223: 3221: 3218: 3216: 3213: 3211: 3210: 3206: 3204: 3201: 3199: 3196: 3194: 3191: 3189: 3186: 3184: 3183:Atlantic surf 3181: 3179: 3176: 3175: 3173: 3171: 3167: 3164: 3162: 3158: 3149: 3144: 3142: 3137: 3135: 3130: 3129: 3126: 3120: 3117: 3113: 3109: 3105: 3104: 3100: 3092: 3088: 3084: 3080: 3076: 3072: 3065: 3062: 3049: 3045: 3041: 3036: 3031: 3027: 3023: 3019: 3015: 3012:(7): L07603. 3011: 3007: 3003: 2996: 2993: 2988: 2984: 2980: 2976: 2972: 2968: 2963: 2958: 2954: 2950: 2946: 2942: 2935: 2932: 2927: 2923: 2919: 2915: 2911: 2907: 2903: 2899: 2892: 2889: 2884: 2880: 2876: 2872: 2868: 2864: 2860: 2856: 2849: 2842: 2839: 2834: 2830: 2826: 2822: 2818: 2814: 2810: 2806: 2799: 2797: 2793: 2788: 2782: 2778: 2771: 2768: 2763: 2759: 2756:(4): 301–14. 2755: 2751: 2744: 2741: 2729: 2725: 2719: 2716: 2711: 2707: 2702: 2697: 2693: 2689: 2685: 2681: 2677: 2673: 2669: 2662: 2659: 2647: 2641: 2638: 2625: 2621: 2615: 2612: 2607: 2603: 2599: 2595: 2588: 2585: 2580: 2576: 2569: 2566: 2561: 2557: 2553: 2549: 2545: 2541: 2537: 2533: 2529: 2522: 2519: 2514: 2510: 2503: 2500: 2495: 2491: 2487: 2483: 2479: 2475: 2470: 2465: 2461: 2457: 2450: 2447: 2442: 2438: 2434: 2430: 2426: 2422: 2418: 2414: 2410: 2403: 2401: 2397: 2392: 2388: 2383: 2378: 2374: 2370: 2366: 2359: 2356: 2352: 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Index

Enteroctopus dofleini
Pleistocene

Point Piños, California
Conservation status
Least Concern
IUCN 3.1
Scientific classification
Edit this classification
Eukaryota
Animalia
Mollusca
Cephalopoda
Octopoda
Enteroctopodidae
Enteroctopus
Binomial name
Wülker
fr

Synonyms
cephalopod
genus
Enteroctopus
Enteroctopodidae
North Pacific
Baja California
West Coast
Aleutian Islands
British Columbia

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