Swimming among a pod of sperm whales in the North Atlantic is a dolphin with an S-shaped spine. A bottlenose dolphin, with an S-shaped spinal deformity, is seen here rubbing against a sperm whale.

A spike in dolphin attacks has marred the tranquil beaches of Fukui Prefecture, Japan. As of 26 August, 18 people have been injured this year, taking the total number of casualties to 29 over the ...