Killer whales wreak havoc on yachts in recent attacks.

A British sailor had the rudders of his yacht ripped off by a pod of five orcas in the Strait of Gibraltar, leaving him marooned in Gibraltar. The sailor said it felt as though the orcas were throwing the yacht around "like a rag doll." There have been 20 incidents of orca attacks in the Strait of Gibraltar in the past month alone. Researchers are trying to work out why killer whales are increasingly targeting boats near Spain, Portugal, and Morocco, with one theory pointing to a single, female orca who may have been traumatized by a previous interaction.