Alex Mustard / Grey seal (Halichoerus grypus) split level view of young investigating camera lens, Lundy Island, Devon, UK, Bristol Channel, August

Claudio Contreras / American crocodile (Crocodylus acutus) split level with animal resting at surface in shallow water over seagrass bed, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico

SCOTLAND: The Big Picture / Bottlenose dolphin (Tursiops truncatus) breaching, Moray Firth, Scotland, UK, July.

Doug Perrine / Bottlenose dolphin (Tursiops truncatus) swimming with a pair of Humpback whales (Megaptera novaeangliae) Kona, Hawaii, USA

Yashpal Rathore / Asiatic elephant (Elephas maximus) young female play fighting. Jim Corbett National Park, India. 2014

Andy Rouse / African Elephant (Loxodonta africana) mother and calf in rain, wallowing in mud. Maasai Mara, Kenya, Africa. September.

Wim van den Heever / Bottlenose dolphin (Tursiops truncatus) porpoising at surface, Port St Johns, South Africa

Wim van den Heever / Bottlenose Dolphin (Tursiops truncates) mother and calf porpoising during annual Sardine run, Port St Johns, South Africa, June.

David Pattyn / Children snorkelling in the sea and swimming with bottlenose dolphins (Tursiops truncatus) with boat approaching. Indian Ocean, Zanzibar, Tanzania, August 2014.

Wim van den Heever / Hippopotamus (Hippopotamus amphibius) out of the water, peering around vegetation. Okavango Delta, Botswana.

Pedro Narra / Bottlenose dolphin (Tursiops truncatus) baby age two weeks porpoising, Sado Estuary, Portugal

Juan Carlos Munoz / Grevy's zebra (Equus grevyi) close up of muzzle, Captive, occurs in Kenya and Ethiopia, Endangered species.