Macroptychaster accrescens (Koehler, 1920)
provided by British Antarctic Survey
Description
Usually yellow or orange in colour, with arms that are thick at the base but taper suddenly near the tip. This rarely seen seastar is very large, reaching up to 50cm across.
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Species distribution
0 to 655m. Found mostly on fine sediments from Sub-Antarctica and South Georgia to the Antarctic Peninsula and Continent
Macroptychaster accrescens is an active predator on a variety of invertebrates such as gastropod and bivalve molluscs and brittle stars. It is also known to eat the seastars Odontaster validus and Odontaster meridionalis, and the sea urchin Sterechinus neumayeri
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