Sexually Frustrated Dolphins go on murderous rampage

Dolphins sometimes kick the crap out of porpoises just for funsies — they don't really compete for food, and science has not yet established the existence of dolphin racists, so it wasn't clear that there was any rhyme or reason to the vicious watermammal-on-watermammal attacks. But now it turns out that the aggro dolphins are mostly young males, so conservation expert Mark Cotter theorizes that this is basically aquatic Fight Club.