Pascal Kobeh / Round stingray (Taeniura grabata) laying on the sand and hiding in a cave, Canary Islands

Jordi Chias / Nurse sharks (Ginglymostoma cirratum) and Round ribbontail stingray (Taeniurops meyeni) feeding at night, Felidhoo Atoll, Maldives, Indian Ocean

Pascal Kobeh / Blackspotted stingray (Taeniurops meyeni) with a remora (Echeneis naucrates) attached to its belly swimming in the open water with a diver in the background. Ari Atoll, Maldives, Indian Ocean.

Pascal Kobeh / Blackspotted stingray (Taeniurops meyeni) on sea floor, Astove, Seychelles, Indian Ocean.

Franco Banfi / Whitetip reef shark (Triaenodon obesus) resting close to Marbled ray (Taeniurops meyeni) Cocos Island National Park, Natural World Heritage Site, Costa Rica, East Pacific Ocean

Franco Banfi / Whitetip reef shark (Triaenodon obesus) resting close to Marbled ray (Taeniurops meyeni) Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Marbled ray (Taeniurops meyeni) Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Marbled ray (Taeniurops meyeni) Cocos Island National Park, Costa Rica, East Pacific Ocean

Franco Banfi / Round stingray (Taeniura grabata) Santa Maria Island, Azores, Portugal, Atlantic Ocean

Pascal Kobeh / Close-up of blackspotted stingray (Taeniurops meyeni) tail and sting, Maldives, Indian Ocean.

Franco Banfi / Scuba diver photographing Round Stingray (Taeniura grabata) Pico Island, Azores, Portugal, Atlantic Ocean

Franco Banfi / Round Stingray (Taeniura grabata) covered in sand, probably pregnant female, Pico Island, Azores, Portugal, Atlantic Ocean