|Researched by||Morvan Barnes||Refereed by||Admin|
|Other common names||-||Synonyms||-|
The cushion star, Hippasteria phrygiana, is small five-armed starfish. Like all starfish, it has a star-shaped body with five equal length arms originating at a central disc. The lower surface of the central disc bears the mouth. A deep furrow runs from the mouth to the end of each arm. In each furrow are two rows of tube feet. Like similar starfish species, Hippasteria phrygiana, has prominent marginal plates and papulae on the upper surface only.
Hippasteria phrygiana has a broad, solid body which can reach up to 20 cm in diameter and moderately long arms. It can be distinguished from similar species by having blunt, knob-like spines and white granules on the upper body plates. It is reddish-brown in colour.
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Last Updated: 27/03/2008