equatorjournal:Sea urchin, 1988. “Sea urchins usually lose their spines as they wash ashore. T
equatorjournal:Sea urchin, 1988. “Sea urchins usually lose their spines as they wash ashore. The test (skeleton) reveals the close relationship to sea stars. The star pattern of openings, which allow tube feet to protrude, are reminiscent of the five arms of a sea star.” From “Beachcomber’s guide: from Cape Cod to Cape Hatteras” by Henry Keatts.https://www.instagram.com/p/Cd1KQeXtqhO/?igshid=NGJjMDIxMWI= -- source link