Staffan Widstrand,Staffan Widstrand / Fishermen in boats, Pulicat Lake, Tamil Nadu, India, January 2013.

Barrie Britton / Snow covered fishing boats in Sitka Harbour, Alaska. Photograph taken on location for BBC TV series 'Nature's Great Events', March 2008.

Paul D Stewart / Illustration of Giant Octopus (Octopus dofleini) attacking a ship, 1815 copperplate engraving from Bertuch's 'Bilderbuch fur kinder' 16 plate 5. with contemporary colour. 'Colosal Polypus' (octopus) a...

Rick Tomlinson / Aerial view, taken from the mast, of SY "Adele"'s bow in the bay of an iceberg, Portal Point, Reclus Pennisula, Antarctica, January 2007 Non editorial uses must be cleared individually.

Kathryn Jeffs / Camera lens view of the 'Golden Fleece' in the centre of a horseshoe shaped iceberg off the Antarctic Peninsula, Antarctica, February 2009, Taken on location for BBC Frozen Planet series

Eric Baccega / View of sailboat from directly above, showing deck, and floating ice. King's Bay, Spizbergen, Svalbard Archipelago, Norway, July 2000

Michael Pitts / Mast light of Japanese WWII ship, which has formed an artificial reef in the Marovo lagoon, Solomon Islands

Ashley Cooper / Sunrise over sailing boats on Lake Windermere in Ambleside, Lake District, England, UK. December 2014.

Ashley Cooper / Sunrise over sailing boats on Lake Windermere in Ambleside, Lake District, England, UK. December 2014.

Ashley Cooper / Sunrise over men fishing in a boat on Lake Windermere in Ambleside, Lake District, UK. December 2014

Ashley Cooper / Sunrise over Lake Windermere in Ambleside, Lake District, UK, with a man paddling a Canadian Canoe. December 2014

Ashley Cooper / Sunrise over the harbour of Ushuaia, Tierra del Fuego, Argentina. February 2014.