And more at National Geographic
Caretta caretta; Naucrates ductor
Trailed by pilotfish, a young loggerhead cruises Atlantic waters around the Azores, where all sea turtles are protected by the EU. Juveniles typically reside within 15 feet of the surface, where waters are warm.
Madeira Islands, Portugal
Once common in the Mediterranean, the monk seal is now the world's most endangered seal species. In the protected waters of the Madeira Islands, its population has increased from six to 35 individuals since the late 1980s.