King penguin (Aptenodytes patagonicus) breeding and nesting colony on South Georgia Island, Southern Ocean, Polar Regions

A pool coloured red from algae that have been fertilized by seabird guano on the Farne Islands, Northumberland, UK.

Adult gentoo penguins (Pygoscelis papua) going and returning from sea to feed, Neko Harbour in Andvord Bay, Antarctica

Adult gentoo penguins (Pygoscelis papua) swimming and on small growlers in Neko Harbour in Andvord Bay, Antarctica

King Penguin colony (Aptenodytes patagonicus) on South Georgia Island, southern Atlantic Ocean.

Adult emperor penguin (Aptenodytes forsteri) foot print on frsh snow near Snow Hill Island in the Weddell Sea, Antarctica.

Adult emperor penguin (Aptenodytes forsteri) on sea ice near Snow Hill Island in the Weddell Sea, Antarctica.

Fulmar (Fulmar glacialis) - slow shutter speed to show wing patterns in flight. Iceland

Blue-footed booby (Sula nebouxii) in the Galapagos Island Group, Ecuador. The Galapagos are a nesting and breeding area for blue-footed boobies.

Fulmar (Fulmar glacialis) - slow shutter speed to show wing patterns in flight. Iceland

Adult gentoo penguins (Pygoscelis papua) going and returning from sea to feed, Neko Harbour in Andvord Bay, Antarctica

Brown pelican (Pelecanus occidentalis) footprints in the wet sand in the Galapagos Island Group, Ecuador. Pacific Ocean.

Adult gentoo penguins (Pygoscelis papua) going and returning from sea to feed along well-worn "penguin highways" carved into the snow and ice in Neko Harbour in Andvord Bay, Antarctica

Adult emperor penguin (Aptenodytes forsteri) tobogganing tracks left in fresh snow near Snow Hill Island in the Weddell Sea, Antarctica.

Adult emperor penguin (Aptenodytes forsteri) on sea ice near Snow Hill Island in the Weddell Sea, Antarctica.

Arctic Tern (Sterna paradisaea) flying silhouetted against blue and white cloud pattern. Soroby. Argyll, Scotland, UK