Ingo Arndt / Grizzly Bear (Ursus arctos horribilis) cub on mothers back walking on tidal flats, Lake Clark National Park, Alaska

Ernie Janes / Bar-tailed godwit (Limosa lapponica) silhouetted at sunset on coastal mudflats, Norfolk, England, UK, February.

David Tipling / Eurasian teal (Anas crecca), Brancaster, Norfolk, February.

Chris Mattison / A figure from Antony Gormley's 'Another Place' installation on the shore at Crosby, Merseyside, UK. April 2014.

Chris Mattison / A figure from Antony Gormley's 'Another Place' installation on the shore at Crosby, Merseyside, UK. April 2014.

Stephen Dalton / Early thorn moth (Selenia dentaria) one of the very rare examples of a moth that holds its wings flat over its back like a butterfly.

Stephen Dalton / Early thorn moth (Selenia dentaria) resting on tree branch. One of the rare examples of a moth that holds its wings flat over its back like a butterfly. UK

Matthias Breiter / Grizzly Bear (Ursus arctos horribilis) male walking on tidal flats at sunrise, Katmai National Park, Alaska

Pete Oxford / Alpacas {Lama pacos} with ears laid back flat, Andes. Ecuador.

Constantinos Petrinos / Mimic octopus impersonating a flat fish eg Flounder, or moving quickly by jet propulsion back to its burrow with prey? Bali

Constantinos Petrinos / Mimic octopus impersonating a flat fish eg Flounder, or moving by jet propulsion back to its burrow with prey? Bali, Indon

Ben Osborne / Ben Osborne sound recording Flat back turtle returning to sea. Crab Is QLD Australia