Could be a chiton, a super-limpet, no knowing unless I catch it in the act, (sometimes a flashlight can surprise midnight raiders in a tank) ---but it is cleaning rocks down to white limestone where it's been, and I've had nothing capable of that show itself in years. Still, there's plenty of rockwork back there it could have been noshing on.
It's a gift, whatever it is. Urchins can do that sort of thing, but I haven't had rocks cast asunder as urchins will.
Tis a puzzlement.
It's a gift, whatever it is. Urchins can do that sort of thing, but I haven't had rocks cast asunder as urchins will.
Tis a puzzlement.