Knowledge (XXG)

Janthina janthina

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This species is found worldwide in the warm waters of tropical and temperate seas, floating at the surface. More specifically, the species is located in the tropical and subtropical Atlantic, Indian and Pacific oceans. They are often found in large groups and sometimes become stranded on beaches when
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of the shell, and a darker purple on the ventral side. The animal has a large head on a very flexible neck. The eyes are small and are situated at the base of its tentacles. The shell, which is violet, with a paler upper surface, is almost smooth, with a slightly depressed-globose shape. It is thin
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Churchill, Celia; Valdes, Angel; Foighil, Diarmaid (2014). "Molecular and Morphological Systematics of Neustonic Nudibranchs (Mollusca: Gastropoda: Glaucidae: Glaucus), with Descriptions of Three New Cryptic Species".
1058: 1196: 825: 1235: 773:(Linnaeus, 1758). In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2009) World Marine Mollusca database. Accessed through: World Register of Marine Species at 1170: 1209: 1340: 1258: 1039: 870: 649:, or free swimming larvae, but the adults do not swim, and cannot create their rafts, except at the surface where air bubbles are available. 1345: 753:
The snail begins life as a male and later changes into a female. The eggs are held by the female until they develop into the larval form.
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and delicate, and is without an operculum. The height of the species shell is up to 38 mm, the width to 40 mm.
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Churchill, Celia K.C.; Ó Foighil, Diarmaid; Strong, Ellen E.; Gittenberger, Adriaan (October 2011).
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Beachcomber's Guide to Gulf Coast Marine Life: Texas, Louisiana, Mississippi, Alabama and Florida
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Rühs, Patrick A.; Bergfreund, Jotam; Bertsch, Pascal; Gstöhl, Stefan J.; Fischer, Peter (2021).
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egg masses. This passive flotation is a particularly resource-efficient form of
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is held pointing down when the animal is floating on the surface of the ocean.
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they are blown ashore by strong winds. The snails are a unique part of the
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Wonders of Western Waters: The Marine Life of South-Western Australia
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http://www.marinespecies.org/aphia.php?p=taxdetails&id=140155
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Pelagic Snails: The Biology of Holoplanktonic Gastropod Mollusks
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on hydrozoa. The air bubbles are stabilized by the secretion of
61: 1071: 1080: 1030:Rothschild, Susan B.; Nick Fotheringham (2004). 1025: 1023: 921:"Females floated first in bubble-rafting snails" 60:, with bubble raft, that has been washed up in 970:"Complex fluids in animal survival strategies" 1063:- Bermuda Department of Conservation Services 8: 719:. In addition to the bubble raft, only the 1068: 861:Lalli, Carol M.; Ronald W. Gilmer (1989). 68:. This is the normal view from above: the 47: 31: 20: 1003: 985: 944: 815: 813: 811: 809: 807: 886: 884: 882: 792:World Register of Marine Species (WoRMS) 762: 671:, especially the by-the-wind sailor, 7: 1251:03bcc50e-8e0b-4a27-a417-096d700a4c37 820:Morrison, Sue; Storrie, Ann (1999). 788:"Janthina janthina (Linnaeus, 1758)" 14: 85: 899:William Collins Publishers Ltd 1: 901:, Auckland, New Zealand 1979 865:. Stanford University Press. 741:The snail's shell is reverse 1341:Gastropods described in 1758 1346:Taxa named by Carl Linnaeus 1034:. Taylor Trade Publishing. 1362: 723:, or larval stage, has an 696:is a member of the family 656: 946:10.1016/j.cub.2011.08.011 734:Five views of a shell of 321:Forbes & Hanley, 1853 227: 220: 197: 190: 82:Scientific classification 80: 55: 46: 39: 30: 23: 711:which have evolved from 659:Ocean surface ecosystem 738: 632: 733: 679:Portuguese man o' war 626: 471:Janthina planispirata 895:New Zealand Mollusca 631:at Manchester Museum 463:Janthina penicephela 16:Species of gastropod 1059:Species Spotlight: 996:2021SMat...17.3022R 937:2011CBio...21.R802C 610:common violet snail 536:Janthina trochoidea 357:Janthina coeruleata 334:Janthina carpenteri 326:Janthina carpenteri 318:Janthina britannica 1005:10.1039/D1SM00142F 769:Gofas, S. (2009). 739: 633: 618:purple storm snail 614:large violet snail 524:Janthina striulata 516:Janthina striulata 497:Janthina rotundata 1323: 1322: 1272:Open Tree of Life 1124:Janthina_janthina 1111:Janthina_janthina 1082:Janthina janthina 1074:Taxon identifiers 1061:Janthina janthina 1041:978-1-58979-061-2 980:(11): 3022–3036. 931:(19): R802–R803. 872:978-0-8047-1490-7 771:Janthina janthina 736:Janthina janthina 717:animal locomotion 683:Physalia physalis 663:These snails are 629:Janthina janthina 572:Janthina janthina 568: 567: 562: 555:Janthina vulgaris 551: 547:Janthina violacea 543: 532: 520: 512: 505:Janthina smithiae 501: 493: 482: 467: 459: 455:Janthina orbignyi 451: 444:Janthina involuta 440: 429: 421:Janthina fragilis 416: 409:Janthina fragilis 405: 394: 387:Janthina depressa 383: 375: 368:Janthina communis 364: 353: 342: 330: 322: 314: 313:Monterosato, 1878 302: 301:Monterosato, 1878 290: 282: 275:Janthina balteata 271: 263: 256:Janthina africana 252: 241: 201:Janthina janthina 58:Janthina janthina 41:Janthina janthina 25:Janthina janthina 1353: 1316: 1315: 1303: 1302: 1293: 1292: 1280: 1279: 1267: 1266: 1254: 1253: 1244: 1243: 1231: 1230: 1228:NBNSYS0000183106 1218: 1217: 1205: 1204: 1192: 1191: 1179: 1178: 1166: 1165: 1153: 1152: 1140: 1139: 1127: 1126: 1114: 1113: 1101: 1100: 1099: 1069: 1046: 1045: 1027: 1018: 1017: 1007: 989: 965: 959: 958: 948: 916: 910: 888: 877: 876: 858: 852: 851: 846: 840: 839: 817: 802: 801: 799: 798: 784: 778: 767: 606:violet sea-snail 557: 549: 538: 530: 518: 507: 499: 488: 486:Janthina roseala 473: 465: 457: 446: 435: 433:Janthina grandis 427: 417:(junior synonym) 411: 400: 389: 381: 370: 359: 348: 340: 328: 320: 312: 306:Janthina bicolor 300: 294:Janthina bicolor 288: 286:Janthina bicolor 277: 269: 258: 247: 245:Janthina affinis 233: 203: 183:J. janthina 90: 89: 51: 35: 21: 1361: 1360: 1356: 1355: 1354: 1352: 1351: 1350: 1326: 1325: 1324: 1319: 1311: 1306: 1298: 1296: 1288: 1283: 1275: 1270: 1262: 1257: 1249: 1247: 1239: 1234: 1226: 1221: 1213: 1208: 1200: 1195: 1187: 1182: 1174: 1169: 1161: 1156: 1148: 1143: 1135: 1130: 1122: 1117: 1109: 1104: 1095: 1094: 1089: 1076: 1055: 1050: 1049: 1042: 1029: 1028: 1021: 967: 966: 962: 925:Current Biology 918: 917: 913: 891:Powell A. W. B. 889: 880: 873: 860: 859: 855: 848: 847: 843: 836: 819: 818: 805: 796: 794: 786: 785: 781: 768: 764: 759: 691: 674:Velella velella 661: 655: 638: 531:Carpenter, 1857 519:Carpenter, 1857 398:Janthina fibula 379:Janthina costae 216: 205: 199: 186: 139:Caenogastropoda 84: 17: 12: 11: 5: 1359: 1357: 1349: 1348: 1343: 1338: 1328: 1327: 1321: 1320: 1318: 1317: 1304: 1294: 1281: 1268: 1255: 1245: 1232: 1219: 1206: 1193: 1180: 1167: 1154: 1141: 1128: 1115: 1102: 1086: 1084: 1078: 1077: 1072: 1066: 1065: 1054: 1053:External links 1051: 1048: 1047: 1040: 1019: 960: 911: 878: 871: 853: 841: 834: 828:. p. 68. 803: 779: 761: 760: 758: 755: 690: 687: 654: 651: 637: 634: 596:in the family 581:holoplanktonic 566: 565: 564: 563: 552: 544: 533: 521: 513: 502: 494: 483: 468: 460: 452: 441: 430: 418: 406: 395: 384: 376: 365: 354: 346:Janthina casta 343: 331: 323: 315: 303: 291: 283: 272: 264: 253: 242: 231:Helix janthina 225: 224: 218: 217: 206: 195: 194: 188: 187: 180: 178: 174: 173: 166: 162: 161: 156: 152: 151: 146: 142: 141: 136: 132: 131: 126: 122: 121: 116: 112: 111: 106: 102: 101: 96: 92: 91: 78: 77: 53: 52: 44: 43: 37: 36: 28: 27: 15: 13: 10: 9: 6: 4: 3: 2: 1358: 1347: 1344: 1342: 1339: 1337: 1334: 1333: 1331: 1314: 1309: 1305: 1301: 1295: 1291: 1286: 1282: 1278: 1273: 1269: 1265: 1260: 1256: 1252: 1246: 1242: 1237: 1233: 1229: 1224: 1220: 1216: 1211: 1207: 1203: 1198: 1194: 1190: 1185: 1181: 1177: 1172: 1168: 1164: 1159: 1155: 1151: 1146: 1142: 1138: 1133: 1129: 1125: 1120: 1116: 1112: 1107: 1103: 1098: 1092: 1088: 1087: 1085: 1083: 1079: 1075: 1070: 1064: 1062: 1057: 1056: 1052: 1043: 1037: 1033: 1026: 1024: 1020: 1015: 1011: 1006: 1001: 997: 993: 988: 983: 979: 975: 971: 964: 961: 956: 952: 947: 942: 938: 934: 930: 926: 922: 915: 912: 908: 907:0-00-216906-1 904: 900: 896: 892: 887: 885: 883: 879: 874: 868: 864: 857: 854: 845: 842: 837: 835:0-7309-6894-4 831: 827: 823: 816: 814: 812: 810: 808: 804: 793: 789: 783: 780: 777:on 2010-05-16 776: 772: 766: 763: 756: 754: 751: 748: 744: 743:countershaded 737: 732: 728: 726: 722: 718: 714: 710: 707: 703: 699: 695: 688: 686: 684: 680: 676: 675: 670: 666: 660: 652: 650: 648: 644: 635: 630: 625: 621: 619: 615: 611: 607: 603: 599: 595: 592: 589: 585: 582: 578: 574: 573: 560: 556: 553: 548: 545: 541: 537: 534: 529: 525: 522: 517: 514: 510: 506: 503: 500:Dillwyn, 1840 498: 495: 491: 487: 484: 480: 476: 472: 469: 464: 461: 456: 453: 449: 445: 442: 438: 434: 431: 426: 422: 419: 414: 410: 407: 403: 399: 396: 392: 388: 385: 380: 377: 373: 369: 366: 362: 358: 355: 351: 347: 344: 339: 335: 332: 327: 324: 319: 316: 311: 307: 304: 299: 295: 292: 287: 284: 280: 276: 273: 268: 267:Janthina alba 265: 261: 257: 254: 250: 246: 243: 240: 236: 232: 229: 228: 226: 223: 219: 214: 210: 204: 202: 196: 193: 192:Binomial name 189: 185: 184: 179: 176: 175: 172: 171: 167: 164: 163: 160: 157: 154: 153: 150: 147: 145:Superfamily: 144: 143: 140: 137: 134: 133: 130: 127: 124: 123: 120: 117: 114: 113: 110: 107: 104: 103: 100: 97: 94: 93: 88: 83: 79: 75: 71: 67: 63: 59: 54: 50: 45: 42: 38: 34: 29: 26: 22: 19: 1081: 1060: 1031: 977: 973: 963: 928: 924: 914: 894: 862: 856: 850:p. 174. 844: 821: 795:. Retrieved 791: 782: 770: 765: 752: 740: 735: 693: 692: 682: 672: 662: 639: 636:Distribution 628: 617: 613: 609: 605: 602:common names 571: 570: 569: 554: 550:Bolten, 1798 546: 535: 527: 523: 515: 504: 496: 485: 470: 462: 454: 443: 432: 424: 420: 408: 397: 386: 378: 367: 356: 345: 337: 333: 325: 317: 309: 305: 297: 293: 285: 274: 266: 255: 244: 230: 200: 198: 182: 181: 169: 149:Epitonioidea 57: 40: 24: 18: 1336:Epitoniidae 1285:SeaLifeBase 1184:iNaturalist 974:Soft Matter 706:amphiphilic 698:Janthinidae 694:J. janthina 689:Description 627:Exhibit of 598:Epitoniidae 466:Peron, 1824 458:Mørch, 1860 428:Mørch, 1860 382:Mørch, 1860 341:Tryon, 1887 329:Mørch, 1860 289:Menke, 1828 270:Anton, 1838 159:Epitoniidae 1330:Categories 987:2005.00773 797:2022-04-07 757:References 677:, and the 657:See also: 425:spiraelata 135:Subclass: 129:Gastropoda 725:operculum 713:epitoniid 702:predators 591:gastropod 584:sea snail 177:Species: 105:Kingdom: 99:Eukaryota 1202:10861637 1150:51512116 1091:Wikidata 1014:33729256 955:21996498 669:hydrozoa 604:include 528:contorta 338:contorta 235:Linnaeus 222:Synonyms 209:Linnaeus 170:Janthina 155:Family: 119:Mollusca 115:Phylum: 109:Animalia 95:Domain: 1241:1096460 1176:2299286 1097:Q338482 992:Bibcode 933:Bibcode 721:veliger 665:pelagic 653:Habitat 647:veliger 643:neuston 594:mollusk 577:species 413:Lamarck 372:Lamarck 165:Genus: 125:Class: 72:of the 56:A live 1313:140155 1300:501795 1297:uBio: 1277:964604 1264:140155 1248:NZOR: 1189:121654 1137:124747 1038:  1012:  953:  905:  869:  832:  709:mucins 600:. Its 588:marine 561:, 1847 542:, 1858 511:, 1858 492:, 1858 481:, 1848 477:& 450:, 1858 439:, 1858 415:, 1799 404:, 1858 393:, 1858 374:, 1799 363:, 1858 352:, 1858 281:, 1858 262:, 1858 251:, 1858 66:Hawaii 1308:WoRMS 1215:72392 1197:IRMNG 1163:60155 1158:EUNIS 982:arXiv 747:spire 575:is a 540:Reeve 526:var. 509:Reeve 490:Reeve 479:Reeve 475:Adams 448:Reeve 437:Reeve 423:var. 402:Reeve 391:Reeve 361:Reeve 350:Reeve 336:var. 310:minor 308:var. 298:major 296:var. 279:Reeve 260:Reeve 249:Reeve 74:shell 70:spire 1290:4448 1259:OBIS 1236:NCBI 1210:ITIS 1171:GBIF 1132:BOLD 1036:ISBN 1010:PMID 951:PMID 903:ISBN 867:ISBN 830:ISBN 826:CALM 616:and 586:, a 559:Gray 239:1758 213:1758 62:Maui 1223:NBN 1145:EoL 1119:AFD 1106:ADW 1000:doi 941:doi 579:of 1332:: 1310:: 1287:: 1274:: 1261:: 1238:: 1225:: 1212:: 1199:: 1186:: 1173:: 1160:: 1147:: 1134:: 1121:: 1108:: 1093:: 1022:^ 1008:. 998:. 990:. 978:17 976:. 972:. 949:. 939:. 929:21 927:. 923:. 897:, 893:, 881:^ 824:. 806:^ 790:. 685:. 681:, 620:. 612:, 608:, 237:, 211:, 64:, 1044:. 1016:. 1002:: 994:: 984:: 957:. 943:: 935:: 909:. 875:. 838:. 800:. 215:) 207:(

Index

Janthina janthina
A live Janthina janthina (with bubble raft) that has been swept up onto a beach in Maui, Hawaii. This is the normal view from above: the spire of the shell is held pointing down like this when the animal is floating on the surface of the ocean water.
Maui
Hawaii
spire
shell
Scientific classification
Edit this classification
Eukaryota
Animalia
Mollusca
Gastropoda
Caenogastropoda
Epitonioidea
Epitoniidae
Janthina
Binomial name
Linnaeus
1758
Synonyms
Linnaeus
1758
Reeve
Reeve
Reeve
Reeve
Reeve
Lamarck
Reeve
Reeve

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