Nick Hawkins / Green sea turtle female (Chelonia mydas) returning to the sea, Tortuguero National Park, Costa Rica.

Alex Mustard / Green sea turtle (Chelonia mydas) female resting on a coral reef. Rock Islands, Palau, Mirconesia. Tropical west Pacific Ocean

Pedro Narra / Green turtle (Chelonia mydas) resting in the shallows of the coast, Bijagos Islands, Guinea Bissau. Endangered species.

Pedro Narra / Green Turtle (Chelonia mydas), digging nest. Bijagos Islands, Guinea Bissau. Endangered species.

Claudio Contreras / Green turtle (Chelonia mydas) Akumal, Caribbean Sea, Mexico, January. Endangered species.

Claudio Contreras / Green turtle (Chelonia mydas) over sea floor, Akumal, Caribbean Sea, Mexico, January. Endangered species.

Claudio Contreras / Green turtle (Chelonia mydas) wide angle view of fin, Akumal, Caribbean Sea, Mexico, January. Endangered species.

Claudio Contreras / Green turtle (Chelonia mydas) with rays of sunlight, Akumal, Caribbean Sea, Mexico, January. Endangered species.

Pedro Narra / Green turtle (Chelonia mydas) female digging nest on beach at night, Guinea Bissau. Endangered species. 3rd Place in the SOS Especes Menacees / SOS Endangered Species Portfolio category of the Terre S...

Pedro Narra / Green Turtle (Chelonia mydas) returning to sea, Bissagos Islands, Guinea Bissau. Endangered species. 3rd Place in the SOS Especes Menacees / SOS Endangered Species Portfolio category of the Terre Sau...

Pedro Narra / Man and woman undertaking monitoring work measuring Green turtle (Chelonia mydas) nests as the the female digs it, Bissagos Islands, Guinea Bissau. Endangered species. 3rd Place in the SOS Especes M...

Pedro Narra / Local people gathered for education program to conserve the wildlife of the Bissagos Islands including the endangered Green turtle (Chelonia mydas) Bissagos Islands, Guinea Bissau, October 2014. 3rd P...