types:
- show 13 types...
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sea star, starfish
echinoderms characterized by five arms extending from a central disk
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brittle star, brittle-star, serpent star
an animal resembling a starfish with fragile whiplike arms radiating from a small central disc
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basket fish, basket star
any starfish-like animal of the genera Euryale or Astrophyton or Gorgonocephalus having slender complexly branched interlacing arms radiating from a central disc
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sea urchin
shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells
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crinoid
primitive echinoderms having five or more feathery arms radiating from a central disk
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holothurian, sea cucumber
echinoderm having a flexible sausage-shaped body, tentacles surrounding the mouth and tube feet; free-living mud feeders
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Astrophyton muricatum
a variety of basket star
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Echinus esculentus, edible sea urchin
a sea urchin that can be eaten
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sand dollar
flattened disklike sea urchins that live on sandy bottoms
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heart urchin
sea urchin having a heart-shaped body in a rigid spiny shell
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sea lily
crinoid with delicate radiating arms and a stalked body attached to a hard surface
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comatulid, feather star
free-swimming stalkless crinoid with ten feathery arms; found on muddy sea bottoms
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Holothuria edulis, trepang
of warm coasts from Australia to Asia; used as food especially by Chinese