Morley Read / Rio Faisanes stubfoot toad (Atelopus coynei), Carchi Province, Ecuador, 2017. Critically endangered. (non-ex)

Will Burrard-Lucas / White rhino (Ceratotherium simum), portrait. Solio Game Reserve, Solio Ranch, Kenya. Taken with remote camera buggy / BeetleCam. EDITORIAL USE ONLY. All other uses require clearance

Bernard Castelein / Silky sifaka (Propithecus candidus) in tree, Marojejy National Park, Madagascar. Critically endagered species.

Heather Angel / Northern white cheeked gibbon (Nomascus leucogenys) female standing in tree with baby aged two weeks. Parents captive bred and released. Wild Elephant Valley / Xishuangbanna, Yunnan Province, China, 2...

Alex Mustard / Coral (Lobophytum sp.) on a reef flat, with Hawksbill turtle (Eretmochelys imbricata) in background. Misool, Raja Ampat, West Papua, Indonesia. Ceram Sea. Tropical West Pacific Ocean.

Alex Mustard / Hawksbill turtle (Eretmochelys imbricata) unusually feeding on hard coral polyps. Misool, Raja Ampat, West Papua, Indonesia. Ceram Sea. Tropical West Pacific Ocean.

Shane Gross / Elkhorn corals (Acropora palmata) at night silhouetted by a scientist's light during the annual coral spawn. Abaco, Bahamas.

Shane P. White / Leatherback Sea Turtle (Dermochelys coriacea) female returning to sea after egg laying, Trinidad and Tobago, Caribbean

Neil Aldridge / White rhinoceros (Ceratotherium simum) mother and calf, prepare to leave a boma - a secure enclosure - in the Okavango Delta in northern Botswana after being translocated from South Africa as part of...

Neil Aldridge / Blindfolded and tranquilised adult White rhinoceros (Ceratotherium simum) with a tracking tag lies and recovers in the Okavango Delta, northern Botswana, following a translocation operation that invol...

Neil Aldridge / Five orphaned White rhinoceros (Ceratotherium simum) calves feed from a trough at dusk at the Rhino Revolution orphanage near Hoedspruit, South Africa. The mothers of these rhinos were killed by poach...

Neil Aldridge / Team of vets and conservation staff move a sedated White rhinoceros (Ceratotherium simum) into a comfortable resting position in a secure enclosure known as a boma during a translocation operation to...