Jordi Chias / Juvenile Green turtle (Chelonia mydas) swimming near the surface, split level view, Fakarava atoll lagoon, Tuamotu Archipelago, French Polynesia, Pacific Ocean.

Jordi Chias / Loggerhead turtle (Caretta caretta) with small fish, Los Gigantes, South Tenerife, Canary Islands, Atlantic

Jordi Chias / Loggerhead turtle (Caretta caretta) close up, Los Gigantes, South Tenerife, Canary Islands, Atlantic

Jurgen Freund / Carapace of a Green turtle (Chelonia mydas). Sipadan Island, Semporna, Sabah, Malaysia

Juergen Freund / Baby green turtle (Chelonia mydas) hatchling in the shallows of the beach, swimming out to sea. Anano Island, Wakatobi, South Sulawesi, Indonesia, November

Graham Eaton / Leatherback Turtle Hatchling (Dermochelys coriacea) crossing a beach towards the sea, Cayenne, French Guiana, July

Jordi Chias / Green Turtle, (Chelonia mydas), Swimming over volcanic sandy bottom, Armenime cove, South Tenerife coast, Canary Islands, Spain, Atlantic Ocean, May 2011, Commended in Wildlife Photographer of the Yea...

Daniel Heuclin / Green sea turtle (Chelonia mydas) digging nest to lay eggs on beach, French Guiana.

Wild Wonders of Europe / Zankl / Loggerhead turtle (Caretta caretta) hatching, Dalyan Delta, Turkey, July 2009

Graham Eaton / Leatherback Turtle (Dermochelys coriacea) returning to the sea after egg laying. Cayenne, French Guiana, June.

Solvin Zankl / Olive ridley sea turtle hatchling (Lepidochelys olivacea) showing egg tooth that helps the hatchling to open the soft but tough egg shell. Ostional beach, Costa Rica, November

Graham Eaton,Graham Eaton / A hatchling Leatherback Turtle (Dermochelys coriacea) nearing the waters edge, Cayenne, French Guiana