Anthopleura xanthogrammica “Giant Green Anemone” Anthozoa

Oregon Coast Aquarium, Newport, OR
June 12, 2015
Robert Niese

 

These anemones can grow up to a foot tall and a foot across! They’re abundant on rocky and sandy shores throughout the north-eastern Pacific (from Alaska to Panama). They tend to occur lower in the intertidal zone than their little, pink counterparts (A. elegantissima). The Giant Green Anemone primarily consumes dislodged mussels, crabs, small fish, and urchins, but has been recorded consuming larger animals including baby birds! It’s primary predators are leather stars, snails, and the shaggy mouse nudibranch.

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