This is an exceptionally colorful sea anemone in a tide pool at Corallina Cove, Montana de Oro State Park. The anemone was quite large and irredecently green. We may have seen it on a visit to Corallina Cove last year - how long can anemone's live? (Apparently for at least several decades and possibly much longer.)

It was difficult coming up with a sharp image, due to low light coupled with slight movement by the anemone's tentacles and the bubbles; I had to use a slow shutter speed and a relatively large f/stop with it's minimal depth of field.

A polarizer cut but could not eliminate the glare; the shadow of my friend Richard Nolthenius standing over the pool also helped. (Rick's home page is here )