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

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

Mark MacEwen / Green Sea Turtle (Chelonia mydas) returning to sea after Egg laying, Raine Island, Australia. Raine Island is the largest and most important green sea turtle nesting area in the world, with over 14,00...

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

Graham Eaton / Leatherback Turtle (Dermochelys coriacea) hatchling crossing a beach to get to the sea. Cayenne, French Guiana, July.

Juergen Freund / Papuan boy swimming in the shallows with his pet baby hawksbill turtle (Eretmochelys imbricata). Tunnung Island, New Hanover, Papua New Guinea, June 2010

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

Juergen Freund / Portrait of newly hatched Leatherback turtle (Dermochelys coriacea) baby. Warmamedi beach, Bird's Head Peninsula, West Papua, Indonesia, July 2009.

Juergen Freund / Leatherback turtle (Dermochelys coriacea) female laying her clutch of eggs. Warmamedi beach, Bird's Head Peninsula, West Papua, Indonesia, July 2009.

Juergen Freund / Green turtle (Chelonia mydas) portrait. Sipadan Island, Semporna, Sabah, Malaysia

Juergen Freund / Leatherback turtle eggs weighed and measured before relocation-burying to hatchery by State Universiti of Papua (UNIPA) students and WWF staff Daro Tadu. Warmamedi beach, Bird's Head Peninsula, West P...

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

Doug Perrine / Green sea turtle (Chelonia mydas) hatchling swimming, Endangered, Caribbean, captive, digitally enhanced

Inaki Relanzon / Hawksbill turtle (Eretmochelys imbricata) swimming underwater, Nosy Be, North Madagascar.

Pete Oxford / Leatherback female returning to sea {Cermochelys coriacea} Grande Riviere, Trinidad

Juergen Freund / Green turtle (Chelonia mydas) digging nest. Turtle Islands, Philippines

Jordi Chias / Juvenile Green turtle (Chelonia mydas) Armenime cove, South Tenerife, Canary Island, Atlantic Ocean

Alex Mustard / Portrait of female Hawksbill turtle (Eretmochelys imbricata) in the coral reef. Ras Mohammed Marine Park, Sinai, Egypt. Red Sea

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

Jordi Chias / Loggerhead turtle (Caretta caretta) swimming near the surface, Balearic channel, Spain.

Graham Eaton / Leatherback Turtle (Dermochelys coriacea) covering her nest after egg laying, Cayenne, French Guiana

Graham Eaton / Leatherback Turtle (Dermochelys coriacea) hatchling approaching the sea. Cayenne, French Guiana, July.

Doug Perrine / Australian flatback sea turtle, (Natator depressus), covered with sand she has flipped over herself for camouflage while resting on the bottom, Australia, November

Cheryl-Samantha Owen / Green turtle (Chelonia mydas) laying its eggs in nest on beach, Aldabra Atoll, Seychelles, Indian Ocean

Konrad Wothe / Loggerhead turtle (Caretta caretta) hatchling running to the sea, lycian coast, Mediterranean Sea, Turkey

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

Pete Oxford / Yellow-spotted / Side Necked River Turtle (Podocnemis unifilis) tracks across sand, left by a female searching for a suitable place to lay eggs. Guarico Province, Venezuela.

Juergen Freund / Leatherback turtle (Dermochelys coriacea) egg on the sand. Warmamedi beach, Bird's Head Peninsula, West Papua, Indonesia, July 2009.

Juergen Freund / Baby Leatherback turtle (Dermochelys coriacea) in WWF Sorong staff-member Eki's hands. Warmamedi beach, Bird's Head Peninsula, West Papua, Indonesia, July 2009

Solvin Zankl / The arrival of many Olive ridley sea turtles (Lepidochelys olivacea) at the beach of Ostional, Costa Rica, Pacific coast, at the beginning of an arribada (mass nesting event) November ^^^ Thousands an...

Solvin Zankl / Female Olive ridley sea turtle (Lepidochelys olivacea) swimming from the open ocean towards the beach of Ostional, Costa Rica, Pacific Ocean to lay its eggs in the warm sand, the curious turtle is inv...

Solvin Zankl / Mature female Olive ridley sea turtle (Lepidochelys olivacea) arrives at the beach of Ostional, Costa Rica, Pacific coast, November, at the beginning of the arribada (mass nesting event) of the sea t...

Solvin Zankl / Female Olive ridley sea turtle (Lepidochelys olivacea) comes up out of water to nest on beach, the arribada (mass nesting event of several days duration) only pauses during hot midday temperatures. O...

Solvin Zankl / Tracks of hatchling Olive ridley sea turtles (Lepidochelys olivacea) in the sand. Ostional beach, Costa Rica, November

Solvin Zankl / Hatchling Olive ridley sea turtles (Lepidochelys olivacea) emerge together and move towards the sea at dawn. They orientate themselves by the brightness of the horizon above the ocean Ostional beach,...

Solvin Zankl / A Costa Rican researcher monitors the temperature in the developing Olive Ridley sea turtle nests at Ostional beach, Costa Rica, November 2009. ^^^ Sea turtles have, like many other reptiles, temperat...

Solvin Zankl / Olive ridley sea turtle hatchlings (Lepidochelys olivacea) on their way to the sea. The hatchlings orientate themselves by the brightness of the horizon above the ocean, being in a group increases the...

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

Claudio Contreras / Looking up at Hawksbill turtle (Eretmochelys imbricata) swimming, Cancun National Park, Caribbean Sea, Mexico, July, Endangered species