Yeah, I just try to avoid swimming where they do. I have no problem leaving the ocean to the ocean dwellers and installing a lovely pool to swim in. Not a problem at all.

I once had a porpose swim up and nudge me with its nose while I was putting on a pair of water skis in Wassau Sound. I felt the bump, saw the dorsal fin right next to me and almost walked on the water. Damn near shit my bathing suit, too.