Hammerhead at Cocos Island Cocos sits 340 miles southwest of mainland Costa Rica (about halfway to t

Hammerhead at Cocos Island

Cocos sits 340 miles southwest of mainland Costa Rica (about halfway to the Galapagos) and is an uninhabited national park. If you manage to make it out here, you’ve probably done so for the diving—some of the best in the world.

Photo: Barry Peters