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
tags: FORME,
from: https://unbearablelightnessofdick.tumblr.com/post/684902632851226624