Denis-Huot / Crowned crane (Balearica regulorum gibbericeps) head portrait, Masai-Mara game reserve, Kenya.

Denis-Huot / Masai giraffe (Giraffa tippelskirchi) drinking at pool with two Red-billed oxpeckers (Buphagus erythrorhynchus) flying around its head, Amboseli National Park, Kenya. Endangered.

Denis-Huot / Masai giraffe (Giraffa tippelskirchi) drinking at pool with two Red-billed oxpeckers (Buphagus erythrorhynchus) flying around its head, Amboseli National Park, Kenya. Endangered.

Denis-Huot / Elephant (Loxodonta africana) male, dust bathing, Amboseli National Park, Kenya. Endangered.

Denis-Huot / Elephant (Loxodonta africana) male, portrait, Amboseli National Park, Kenya. Endangered.

Denis-Huot / Elephant (Loxodonta africana) male, portrait, Amboseli National Park, Kenya. Endangered.

Ann & Steve Toon / White-backed vultures (Gyps africanus) flock perched in tree, silhouetted at sunrise, Mashatu game reserve, Botswana. Critically endangered.

Alex Mustard / Schools of fish, including Bohar snappers (Lutjanus bohar), Yellow-spotted trevally (Carangoides orthogrammus) and Bigeye trevally (Caranx sexfasciatus) gathering adjacent to a colourful coral reef wi...

Alex Mustard / Orange painted frogfish (Antennarius pictus) resting between the venemous spines of a Fire urchin (Asthenosoma varium), Batangas marine protected area, Luzon, Philippines. Verde Island Passages, Pacif...

Alex Mustard / Saddleback anemonefish (Amphiprion polymnus) and a Spotted porcelain crab (Neopetrolisthes maculatus) living together in an anemone. Bitung, North Sulawesi, Indonesia, Lembeh Strait, Molucca Sea.

Alex Mustard / Marine iguana (Amblyrhynchus cristatus) feeding on green algae on seabed, with more iguanas on the surface behind, Cape Douglas, Fernandina Island, Galapagos Islands, Pacific Ocean.

Alex Mustard / Mexican hogfish (Bodianus diplotaenia) male, with Pacific creolefish (Paranthias colonus) behind, swimming over reef, Darwin Island, Galapagos Island, Pacific Ocean.