Cushion star

(redirected from cushion stars)
(Zool.) a pentagonal starfish belonging to Goniaster, Astrogonium, and other allied genera; - so called from its form.

See also: Cushion

References in periodicals archive ?
There is also a lesser-known species called cushion stars but you really have to look carefully for them and Worms Head causeway, Gower, is the only place I know where you can find them in Wales.
He added: "There are pencil urchins which are ordinary sea urchins with a very strong pencil-like spine, cushion stars which are strange star fish, and bizarre crabs.
exigua are cushion stars and usually have six and five arms, respectively (Dartnall 1971).
And he said even cushion stars, a rare type of starfish which was almost wiped out in the area, had now recovered their numbers.