Alex Mustard / Carapace of a dead olive Ridley turtle (Lepidochelys olivacea) entangled in discarded fishing gear. Indian Ocean, off Sri Lanka.

Martin van Lokven / Hawksbill Sea Turtle (Eretmochelys imbricata), D'Arros Island, Seychelles

Jordi Chias / Hawksbill turtle (Eretmochelys imbricata) feeding on coral, South Ari Atoll, Maldives Islands, Indian ocean.

Jordi Chias / Green Turtle (Chelonia mydas) from underneath with diver in the background, Sulawesi, Indonesia, Indian Ocean.

Jordi Chias / Green turtle (Chelonia mydas) from underneath swimming through the surface, Mayotte Island, Comores, Indian Ocean.

Jordi Chias / Green turtle (Chelonia mydas) feeding in Cymodocea, inside lagoon, Mayote Islands, Indian Ocean

Jordi Chias / Hawksbill turtle (Eretmochelys imbricata) swimming over de reef, Mayotte Island, Comores, Indian Ocean.

Jordi Chias / Green turtle (Chelonia mydas) covering with sand the eggs after laying them in the beach, Europa Island, Eparse Islands / Scattered Islands in the Indian Ocean, Mozambique Channel, Indian Ocean.

Jordi Chias / Green turtle (Chelonia mydas) returning at sea after egg laying in the beach, Europa Island, Eparse Islands / Scattered Islands in the Indian Ocean, Mozambique Channel, Indian Ocean.

Jordi Chias / Male Green turtles (Chelonia mydas) inside lagoon, Europa Island, Eparse Islands / Scattered Islands in the Indian Ocean, Mozambique Channel, Indian Ocean.

Michael Pitts / Green turtle (Chelonia mydas) swimming over a reef, Maldives, Indian Ocean.

Cheryl-Samantha Owen / Green turtles (Chelonia mydas) pair mating near surface, Aldabra Atoll, Seychelles, Indian Ocean