Ben Osborne / Ian McCarthy in Antarctica filming Blue-eyed cormorants for BBC television series 'Life in the Freezer'

Ian McCarthy / Photographer Ian McCarthy with camera waiting to photograph walruses, Ellesmere Island, Nunavut, Canada.

Ian McCarthy / Long tailed duck (Clangula hyemalis) Ellesmere Island, Nunavut, Canada.

Ian McCarthy / Atlantic salmon (Salmo salar) leaping up Cassley Falls, Scotland, UK

Ian McCarthy / Photographer Ian McCarthy with camera, Ellesmere Island, Nunavut, Canada.

Ian McCarthy / Stoat / Ermine (Mustela erminea) in summer coat standing on hind legs by ice, Ellesmere Island, Arctic, Canada

Ian McCarthy / Atlantic salmon (Salmo salar) leaping up Cassley Falls, Scotland, UK

Ian McCarthy / Pair of Rock ptarmigan {Lagopus mutus} in snow storm, Bathurst island, Nunavut, Canada

Ian McCarthy / Alpine / Yellow billed chough {Pyrrhocorax graculus} flying around bhuddist prayer flag, Dolpo, Nepal

Ian McCarthy / Rock ptarmigan {Lagopus mutus} on lichen covered rock, Brown island, Nunavut, Canada

Ian McCarthy / Reindeer {Rangifer tarandus} crossing landscape, introduced to South Georgia by norwegians whalers in early 20th Century, South Georgia

Ian McCarthy / European river otter {Lutra lutra} emerging from sea and shaking, Shetland, Scotland, UK