David Tipling / Snow petrel (Pagadroma nivea nivea) flying around Iceberg off South Georgia, Southern Ocean January

Terry Whittaker / Slow motion close-up of a large group of Fulmars (Fulmarus glacialis) feeding from a fish processing plant outfall, Grundafjordur, Iceland, March.

Pal Hermansen / Fulmar (Fulmarus glacialis) flying with reflection on sea, Iceland, July.

Luis Quinta / Great shearwater (Puffinus gravis) in flight, Fonte da Telha Beach, Portugal, October.

Luis Quinta / Great shearwater (Puffinus gravis) on ocean, near the Fonte da Telha Beach, Portugal, October.

Brent Stephenson / Northern giant petrel (Macronectes halli) moving through water, off Kaikoura, Canterbury, New Zealand, November.

Franco Banfi / Cory's shearwaters (Calonectris diomedea) diving among a mass of shoaling fish to feed, along with Atlantic spotted dolphins (Stenella frontalis), Formigas Islet dive site, Azores, Portugal, Atlantic...

Franco Banfi / Cory's shearwaters (Calonectris diomedea) diving among a mass of shoaling fish to feed, along with Atlantic spotted dolphins (Stenella frontalis), Formigas Islet dive site, Azores, Portugal, Atlantic...

Ernie Janes / Fulmar (Fulmaris glacialis) in flight with Hunstanton, Norfolk, England, UK, February.

Graeme Guy / Pintado Petrel (Daption capense) flying, South Island, New Zealand

Bryan and Cherry Alexander / Emperor penguins (Aptenodytes forsteri) colony, with Snow petrel (Pagodroma nivea) flying past and dark sky. Atka Bay. Antarctica

Bryan and Cherry Alexander / Chinstrap penguins (Pygoscelis antarctica) on a blue iceberg, with Antarctic Prion (Pachyptila desolata) flying over. Antarctica