Reeveseye
Contributor
My wife and I were diving the "Underwater Island" dive site off West Anacapa, CA yesterday. We saw a large amount of the reef covered with the inverts seen in the attachment. I included the starfish in the picture to give a sense of scale, but it's all the yellow, orange, and purple feathery tentacles that I couldn't identify. They look like the arms of a brittle starfish, but weren't attached to any body I could see. I checked my Audubon guide, but didn't see anything similar. What are those things?