You won't swim in ponds because you don't know what's in them. But you will swim in the ocean. Interesting.I won't swim in a whirlpool in a body of water. I'm afraid I would get pulled under the current. I love swimming in lakes though and the ocean too. I'm not a big pond swimmer though. You just never know what is in ponds!
We've even been known to jump off bridges into the lake.