#991 - Coscinasterias muricata - Eleven-armed Seastar
A large - 25cm across - predatory seastar that I found hurrying across the bottom of a tidepool just after sunset. It usually has 11 arms, but can have as few as 7 or as many as 14. This is one of the species that can reproduce asexually, by tearing themselves in half.
Cape Peron, Perth
EDIT: Renumbered because of a duplicate in the list. I’m an idiot.









