Species in the phylum Echinodermata Results 1 - 3
Thumbnail for Echinus esculentus
Edible sea urchin (Echinus esculentus)
The edible or common sea urchin has a large, rounded 'shell', which is actually an external skeleton, correctly called a 'test', c...  More  8 Images  2 Videos
Thumbnail for Ophiothrix fragilis
Common brittlestar (Ophiothrix fragilis)
Like all brittlestars, the common brittlestar has five long, slender arms, which radiate out from a central disc. The mouth is loc...  More  7 Images  1 Video

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