find the rock that he is in and fresh water dip that rock and he will jump out super simple.
Thanks Bryan - he is actually living under a rock rather than in it. I can't remove him, as the tank is actually his home and the students get a kick out of watching him eat whenever we feed him. Sooo, I'll just have to work around him.
I collect PEs, and I'm always looking to trade for ones I don't have yet.