So I bought a pincushion sea urchin about a month ago. My LFS told me it might eat corraline algae (confirmed) and it might also try to pick up soft corals to "camouflage" itself (confirmed!!). Mine decided to grab some clove polyps and keep on trucking! It hasn't let go of it for weeks lol.
What other weird things have your sea urchins picked up??
What other weird things have your sea urchins picked up??