Cushion star


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

See also: Cushion

References in periodicals archive ?
The first ever record of the Arctic cushion star on the English coast was found within the site.
In Anglesey, researchers found an unusual form of egg wrack, which is similar to that found in Scottish lochs and the cushion star, which is at its northern limit in the UK.
His main fear at the time was that the species of starfish he had been credited with discovering just 28 years before - the cushion star - could be wiped out from the area.
In Anglesey an unusual form of egg wrack was discovered that is similar to that found in Scottish lochs and the cushion star, which is at its northern limit in the UK.
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).