Alex Mustard / Green turtle (Chelonia mydas) feeding on Seagrass (Halophila stipulacea), blowing sand out of nostrils, on sea floor. Marsa El Shouna, Marsa Alam, Egypt.

Vincent Grafhorst / Hippopotamus (Hippopotamus amphibius) spraying water from nostrils, Khwai River, Botswana

Alex Mustard,Alex Mustard / Portrait of a Yellow moray eel (Gymnothorax prasinus) - endemic to SE Australia. Chowder Bay, Sydney Harbour, New South Wales, Australia.

Mark Carwardine / Close up of Sumatran rhino (Dicerorhinus sumatrensis) browsing on forest vegetation. Captive-Sumatran Rhino Sanctuary, within Way Kambas National Park, Lampung Province, southern Sumatra, Indonesia

Peter Cairns / 2020VISION / Group of tourists wearing waterproof clothing and life jackets photograph Gannet colony from zodiac boat on tour around Bass Rock, North Berwick, Firth of Forth, Lothian, Scotland, UK, August 2011. Di...

Alex Mustard / A Florida manatee (Trichechus manatus latirostrus) close up head /nostrils portrait in Three Sisters Spring. Crystal River, Florida, USA. February 2010

Solvin Zankl / Female Olive ridley sea turtle (Lepidochelys olivacea) swimming from the open ocean towards the beach of Ostional, Costa Rica, Pacific Ocean to gather for an arribada (mass nesting event). November

Edwin Giesbers / Wild boar (Sus scrofa) mother watching over tiny piglets, the Netherlands, April

Michael D. Kern / Striped western diamondback rattlesnake (Crotalus atrox) captive, from USA

Jean E. Roche / Close up of nostrils of White horse of the Camargue on wetlands, Camargue, France, January 2009

Pete Oxford / Galapagos Giant tortoise close up portrait - dome form {Geochelone elephantopus} retreating into shell. Galapagos Is

Nick Garbutt / Guanaco (Lama guanicoe) female, portrait whilst alert, Torres del Paine National Park, Patagonia, Chile. November.