Michael Pitts / Green Turtle (Chelonia mydas) hatchling swimming out to deep water from Karan Island, Saudi Arabia, Arabian Gulf.

Jabruson / Dying African forest elephant (Loxodonta africana cyclotis), shot and wounded by poachers, near Lokoue Bai. Odzala-Kokoua National Park, Democratic Republic of Congo.

Tim Laman / Two Red-crowned cranes (Grus japonensis) in flight in snow, Japan.

Tim Laman / Red-crowned crane (Grus japonensis) pair in a snowstorm, Hokkaido, Japan. Endangered species.

Chris & Monique Fallows / African penguin (Spheniscus demersus) group at surface with cloudy sky, False Bay, Cape Town, South Africa.

Claudio Contreras / Californian sea lion (Zalophus californianus), Espiritu Santo Island National Park, Sea of Cortez (Gulf of California), Mexico, April

Claudio Contreras / California condor (Gymnogyps californianus) preening, IUCN Critically Endangered, captive.

Claudio Contreras / California condor (Gymnogyps californianus), IUCN Critically Endangered, captive.

Juergen Freund / Junior ranger carries a green turtle (Chelonia mydas) to shore for the scientific research data gathering. Queensland, Australia, May 2011. Model released.

Ann & Steve Toon / Save the Rhino Trust camel camp patrol teams Hans Ganaseb (left) and Dansiekie Ganaseb with Simson Uri-Khob (no hat) and camels, Kunene region, Namibia, May 2013

Ann & Steve Toon / Wild elephant bull (Loxodonta africana), hoisted into position by crane for vasectomy operation in bush by the Elephant Population Management Program team with Dr Jeff Zuba, senior associate veterinar...