I just bought a new BioCube tank this past weekend and as I was transferring everything to it, I stumbled across this. It's an abandoned crab shell with a stick like thing growing out of it, the stick is about an inch and a half long.
I haven't been able to find anything by researching, so I thought I would reach out to fellow saltwater tank friends. I attached a short YouTube video I hope works. Please let me know what you think this might be!




