Alex Mustard / Basking shark (Cetorhinus maximus) rear view of shark feeding at the surface on plankton, Cairns Of Coll, Isle of Coll, Inner Hebrides, Scotland, UK, North East Atlantic Ocean, June

Alex Mustard / Basking shark (Cetorhinus maximus) feeding at the surface on plankton, Cairns Of Coll, Isle of Coll, Inner Hebrides, Scotland, UK, North East Atlantic Ocean, June

Alex Mustard / A close up portrait of a cod (Gadus morhua) over a kelp forest. Husavik Iceland. North Atlantic Ocean. April 2012

Alex Mustard / Grey angelfish (Pomacanthus arcuatus) head portrait, Georgetown, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Erlend Haarberg / Londrangar sea stacks, Snaefellsnes peninsula, Iceland, February 2011

Erlend Haarberg / Common / Harbour seal (Phoca vitulina) looking out of water, Iceland, May

Erlend Haarberg / Glacier ice on sea shore, Jokulsarlon, Iceland, April 2010

Erlend Haarberg / Common / Harbour seal (Phoca vitulina) swimming in wave, Iceland, August