Are sunpolyps (Tubastreae) common here? About 40 years ago I found a colony over an inch across on a jetty in Coney Island. Seems too big to have grown in a single season, so it must have survived a winter or two.
It was bright orange, attached to the underside of a rock about 3 feet below the surface at low tide.
Back then I used to catch lots of spotfin butterflies and the occasional four eye snorkeling around the jetties, so this is nothing new.