33:
51:
208:
The sand star has a small disc and five long, flattened arms with tapering tips. It can grow to a diameter of 40 cm (16 in), and is a grey, greenish-grey, or pale brown colour, sometimes speckled with white. The arms have rows of large marginal plates, each with several spines, but these
283:
on which it feeds. Unlike some other starfish, it cannot evert its stomach, so is limited to smaller-sized prey. It is agile, and can right itself rapidly if turned upside down. The long, pointed tube feet are specially adapted for movement over soft sediments, but lose traction if the sand star
284:
tries to scale steeply sloping rocks. It is a fast traveller, and can move across the seabed at the rate of 280 centimetres (110 in) per minute, many times faster than slow species such as the
267:
The sand star is well-camouflaged on the sandy and muddy seabeds where it is found, and is often half-covered with sediment. It can create a shallow depression and work its way under the
223:, but in that species, the large marginal plates are visible from above. This starfish seems to be easily damaged, and often breaks in pieces if raised from the seabed by
551:
374:
590:
685:
436:
525:
564:
407:
603:
32:
675:
680:
642:
322:
569:
499:
214:
227:. Even when brought up intact, it often has missing or regenerating arms, perhaps the result of attacks by predatory
595:
50:
467:
444:
285:
219:
504:
145:
415:
647:
310:
582:
244:
162:
634:
45:
556:
616:
512:
252:
621:
190:
670:
664:
197:
517:
342:
280:
276:
629:
577:
538:
102:
490:
272:
82:
256:
193:
62:
217:, but instead end with blunt points. The sand star could be confused with
200:
on sandy and muddy seabeds at depths to about 600 m (2,000 ft).
484:
268:
224:
186:
92:
530:
243:
The sand star is found at depths to 600 m (2,000 ft) on soft
182:
543:
248:
210:
122:
112:
72:
461:
292:), which can only traverse 15 cm (5.9 in) in a minute.
608:
232:
228:
465:
247:
in the northeastern
Pacific Ocean, with a range extending from
443:. Sea Stars of the Pacific Northwest. Archived from
414:. Sea Stars of the Pacific Northwest. Archived from
474:
8:
368:
366:
462:
31:
20:
402:
400:
398:
396:
394:
351:Phylum Echinodermata: Subtidal Sea Stars
309:Mah, Christopher (2010). Mah CL (ed.).
301:
7:
213:(upper) side. The tube feet have no
40:Sand star (left) and shrimp (right)
14:
686:Taxa named by Adolph Eduard Grube
323:World Register of Marine Species
49:
1:
702:
676:Fauna of the Pacific Ocean
196:found in the northeastern
681:Animals described in 1866
319:World Asteroidea database
209:are not visible from the
151:
144:
46:Scientific classification
44:
39:
30:
23:
439:Dermasterias imbricata
290:Dermasterias imbricata
373:Cowles, Dave (2005).
220:Astropecten verrilli
16:Species of starfish
658:
657:
617:Open Tree of Life
468:Taxon identifiers
253:Galapagos Islands
170:
169:
137:L. foliolata
693:
651:
650:
638:
637:
625:
624:
612:
611:
599:
598:
586:
585:
573:
572:
560:
559:
547:
546:
534:
533:
521:
520:
508:
507:
495:
494:
493:
476:Luidia foliolata
463:
456:
455:
453:
452:
437:"Leather star –
433:
427:
426:
424:
423:
410:Luidia foliolata
404:
389:
388:
386:
385:
377:Luidia foliolata
370:
361:
360:
358:
357:
345:Luidia foliolata
339:
333:
332:
330:
329:
313:Luidia foliolata
306:
273:polychaete worms
269:bivalve molluscs
174:Luidia foliolata
157:
155:Luidia foliolata
54:
53:
35:
25:Luidia foliolata
21:
701:
700:
696:
695:
694:
692:
691:
690:
661:
660:
659:
654:
646:
641:
633:
628:
620:
615:
607:
602:
594:
589:
581:
576:
568:
563:
555:
550:
542:
537:
529:
524:
516:
511:
503:
498:
489:
488:
483:
470:
460:
459:
450:
448:
435:
434:
430:
421:
419:
406:
405:
392:
383:
381:
372:
371:
364:
355:
353:
341:
340:
336:
327:
325:
308:
307:
303:
298:
265:
241:
206:
166:
159:
153:
140:
48:
17:
12:
11:
5:
699:
697:
689:
688:
683:
678:
673:
663:
662:
656:
655:
653:
652:
639:
626:
613:
600:
587:
574:
561:
548:
535:
522:
509:
496:
480:
478:
472:
471:
466:
458:
457:
428:
390:
362:
334:
315:(Grube, 1866)"
300:
299:
297:
294:
264:
261:
240:
237:
205:
202:
168:
167:
160:
149:
148:
142:
141:
134:
132:
128:
127:
120:
116:
115:
110:
106:
105:
100:
96:
95:
90:
86:
85:
80:
76:
75:
70:
66:
65:
60:
56:
55:
42:
41:
37:
36:
28:
27:
15:
13:
10:
9:
6:
4:
3:
2:
698:
687:
684:
682:
679:
677:
674:
672:
669:
668:
666:
649:
644:
640:
636:
631:
627:
623:
618:
614:
610:
605:
601:
597:
592:
588:
584:
579:
575:
571:
566:
562:
558:
553:
549:
545:
540:
536:
532:
527:
523:
519:
514:
510:
506:
501:
497:
492:
486:
482:
481:
479:
477:
473:
469:
464:
447:on 2012-09-09
446:
442:
440:
432:
429:
418:on 2012-09-09
417:
413:
411:
408:"Sand star –
403:
401:
399:
397:
395:
391:
380:
378:
369:
367:
363:
352:
348:
346:
338:
335:
324:
320:
316:
314:
305:
302:
295:
293:
291:
287:
282:
281:sea cucumbers
278:
277:brittle stars
274:
270:
262:
260:
258:
254:
250:
246:
238:
236:
234:
230:
226:
222:
221:
216:
212:
203:
201:
199:
198:Pacific Ocean
195:
192:
188:
184:
180:
176:
175:
164:
158:
156:
150:
147:
146:Binomial name
143:
139:
138:
133:
130:
129:
126:
125:
121:
118:
117:
114:
111:
108:
107:
104:
101:
98:
97:
94:
91:
88:
87:
84:
83:Echinodermata
81:
78:
77:
74:
71:
68:
67:
64:
61:
58:
57:
52:
47:
43:
38:
34:
29:
26:
22:
19:
475:
449:. Retrieved
445:the original
438:
431:
420:. Retrieved
416:the original
409:
382:. Retrieved
379:Grube, 1866"
376:
354:. Retrieved
350:
347:Grube, 1866"
344:
337:
326:. Retrieved
318:
312:
304:
289:
286:leather star
266:
242:
239:Distribution
218:
207:
178:
173:
172:
171:
154:
152:
136:
135:
123:
24:
18:
630:SeaLifeBase
578:NatureServe
539:iNaturalist
204:Description
103:Paxillosida
665:Categories
451:2012-09-27
422:2012-09-26
384:2012-09-27
356:2012-09-26
328:2012-09-26
296:References
245:substrates
93:Asteroidea
583:2.1142863
263:Behaviour
257:Nicaragua
194:Luidiidae
179:sand star
131:Species:
113:Luidiidae
69:Kingdom:
63:Eukaryota
557:10585033
491:Q3276426
485:Wikidata
225:trawling
187:starfish
165:, 1866)
109:Family:
79:Phylum:
73:Animalia
59:Domain:
531:2270618
251:to the
215:suckers
189:in the
183:species
181:, is a
119:Genus:
99:Order:
89:Class:
671:Luidia
648:368114
622:258317
609:368114
596:105861
570:156866
544:195859
279:, and
249:Alaska
211:aboral
191:family
177:, the
124:Luidia
643:WoRMS
635:48679
552:IRMNG
518:3WDP6
505:32894
229:crabs
163:Grube
604:OBIS
591:NCBI
565:ITIS
526:GBIF
500:BOLD
255:and
233:fish
513:CoL
231:or
185:of
667::
645::
632::
619::
606::
593::
580::
567::
554::
541::
528::
515::
502::
487::
393:^
365:^
349:.
321:.
317:.
275:,
271:,
259:.
235:.
454:.
441:"
425:.
412:"
387:.
375:"
359:.
343:"
331:.
311:"
288:(
161:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
