Dolphin, the air breathing mammal and not the pelagic offshore fish. There is a huge difference between these two like-named creatures. Man, those air breathing ones were a real pain in the ass for SS. They were big, fast, smart, and once they locked on to you there was no getting away from them as you could not outrun them and that damned clicking and squealing they did while they were chasing you drove the fish insane at times causing them to both into deeper water, instead