Suzi Eszterhas / Harbor Seal (Phoca vitulina) group on ice floes, Prince William Sound, Alaska

Suzi Eszterhas / Sea Otter (Enhydra lutris) pair in icy water, Prince William Sound, Alaska

Hiroya Minakuchi / Orca (Orcinus orca) pod surfacing, Prince William Sound, Alaska

Richard Robinson / William Trubridge diving - a world champion free diver who is campaigning to protect the Critically Endangered Maui's dolphin (Cephalorhynchus hectori maui) endemic to New Zealand. January 2008. Edi...

Donald M. Jones / Sea Otter (Enhydra lutris), Prince William Sound, Alaska

Donald M. Jones / Sea Otter (Enhydra lutris) mother and pup, Prince William Sound, Alaska

Chris & Monique Fallows / Orca male (Orcinus orca) raising pectoral flipper out of the water, Prince William Sound, Alaska, USA.

Chris & Monique Fallows / Pink Salmon (Oncorhynchus gorbuscha) migrating in small shallow river, Prince William Sound, Alaska, USA.

Ross Hoddinott / 2020VISION / Lesser celandine (Ranunculus ficaria) in flower, Cornwall, England, UK, March. Did you know? William Wordsworth wrote three poems about Lesser celandines.

Steven Kazlowski / Trans-Alaskan Pipeline, with blooming fall tundra colours, that runs from Prudhoe Bay on the Arctic coast to Valdez at the north central coast of Prince William Sound, Alaska, USA

Paul D Stewart / Lithograph with contemporary colouring, continental version of the last wallchart produced by Benjamin Waterhouse Hawkins for the Department of Science and Art 1862. It is entitled 'Pachydermata and C...

Paul D Stewart / 'Martha' the last passenger pigeon, (Ectopistes migratorius), who died Cincinnati Zoo, September 1st, 1914. This portrait of her published in March 1915 as the Frontispiece to William Hornaday's 'The...