One of my last dives I was with a group on a local dive boat.First we found a sleeping turtle, and this diver tried to pull him out from his slumber. This upset me. Then as I swam up on a nurse shark sleeping, the same diver grabbed the shark by his tail to get him to move. If that shark were a different kind of shark or spooked, it could have bitten me. This scenario is very upsetting to me.