Espen Bergersen / Sperm whale {Physeter macrocephalus} showint tail fluke as it dives. Photographed just before midnight. 22 nautical miles northwest of Andenes, Northern Norway. July

Ingo Arndt / Fisheries Protection Vessel (Pharos) arrived at King Edward Point with King penguins on shoreline, South Georgia Heritage Trust Rat Eradication Project, South Georgia, February 2011

Michael Pitts / Diver on the wreck of the US Submarine tender USS Macaw, sunk in the World War II due to a navigation error, Midway atoll, Pacific Ocean. Model released.

Mark Hamblin / 2020VISION / Barn Swallow (Hirundo rustica) alighting at pool to collect mud for nest building. Inverness-shire, Scotland, June .Did you know? Due to the distances that Swallows travel, it was traditional for sail...

Ernie Janes / Two people walking on Cley beach near boats looking towards Blakeney Point with storm clouds overhead, Norfolk, UK, July 2011

Robert Thompson / Lighthouse on Fanad Head at sunset, County Donegal, Republic of Ireland, UK, August 2011

Ross Hoddinott / Godrevy Lighthouse at sunset, seen through rocksand rockpool in the foreground. Nr Hayle, Cornwall, UK, June 2009

Juan Carlos Munoz / Commerical fishing boat passes through the Parque Natural del Estrecho, off Costa de la Luz, Cadiz, Andalucia, Spain, July 2008

Billy Black / Gull (Larinae) sitting on mooring ball in calm waters on misty day. Robinhood, Maine, USA, July 2010.

Inaki Relanzon / Lighthouse on Snafellsness Peninsula, Iceland, July 2008

Philippe Clement / Fishing boats and lighthouse at night on the island Ile Vierge, Brittany, France, June 2009

Espen Bergersen / Minke whale (Baelanoptera acutorostrata) photographed just before midnight. Outside Andoya, Northern Norway. 22 nautical miles northwest of Andenes, Northern Norway. July

Michael Pitts / Diver on the bow of U-Boat -U352. Type VIIC sunk off Cape Lookout on the 9th May 1942, North Carolina, USA, September 2013.

Michael Pitts / Diver on the conning tower of U-Boat -U352. Type VIIC sunk off Cape Lookout on the 9th May 1942, North Carolina, USA, September 2013.

Franco Banfi / Yellow sponges (Aplysina cavernicola) on propeller pt the wreck 'Vassilios T', Vis Island, Croatia, Adriatic Sea, Mediterranean

Onne van der Wal / Maritime memorabilia. Valparaiso, Chile 2008.

Onne van der Wal / Maritime memorabilia. Valparaiso, Chile 2008.

Onne van der Wal / Stacks of Navy hats. Valparaiso, Chile 2008.

Onne van der Wal / Maritime memorabilia in a restaurant. Valparaiso, Chile 2008.

Onne van der Wal / Maritime memorabilia in a restaurant. Valparaiso, Chile 2008.

Onne van der Wal / Maritime memorabilia in a restaurant. Valparaiso, Chile 2008.

Rob Cousins / Nautical signal flags flying on sailing boat on Bristol Floating Harbour at the 2008 Harbour Festival, August

Onne van der Wal / Maritime memorabilia. Valparaiso, Chile 2008.

Brent Stephenson / Nautical chart showing map of Deception Island. South Shetland Islands, Antarctica, January.

Jeff Wilson / Nautical chart of the South Shetland Islands, South Atlantic, November 2008. Taken on location for the BBC series, Frozen Planet.

Jeff Wilson / Nautical chart of the South Shetland Islands, South Atlantic, November 2008. Taken on location for the BBC series, Frozen Planet.

Bryan and Cherry Alexander / Cape Vincent, Elephant Island seen across 15 nautical miles of pack ice. South Shetland Islands, Antarctica, 2009.

Jenny E. Ross / Glacier descending into the narrow fjord, which is almost 50 nautical miles long, 4 to 5 nautical miles wide, and 1000 meters (more than 3200 feet) deep. Ofjord, within Scoresby Sund, Greenland

Jenny E. Ross / View of iceburg within narrow fjord, which is almost 50 nautical miles long, 4 to 5 nautical miles wide, and 1000 metres deep, flanked by mountains Ofjord, within Scoresby Sund, Greenland

Gabriel Rojo / Nautical maps of Deception Island, Antarctic Peninsula, Antarctica, February 2006

Barry Bland / A man navigating by Sextant, a measuring instrument generally used to measure the angle of elevation of a celestial object above the horizon. Model Released. ^^^Making this measurement is known as sig...

Barry Bland / A man navigating by Sextant, a measuring instrument generally used to measure the angle of elevation of a ^^^celestial object above the horizon. Making this measurement is known as sighting the object...

Rick Tomlinson / 321 meters above the Arabian Gulf, Burj Al Arab Hotel, Dubai, is the world's tallest and most architecturally advanced hotel in the world. ^^^ Standing 280 meters offshore on a man-made island, Burj A...

Rick Tomlinson / Sun setting behind the Burj Al Arab Hotel, Dubai. At 321 meters above the Arabian Gulf, Burj Al Arab Hotel is the world's tallest and most architecturally advanced hotel in the world. ^^^ Standing 280...

Rick Tomlinson / British yachtsman Lawrie Smith, skipper of "Intrum Justitia" celebrates winning the second leg of the Whitbread Round the World Race 1993-94. ^^^ The W60-class boat took 25 days, 14 hours, 39 minutes...

Onne van der Wal / Antique nautical clock from a classic yacht.

Luciano Candisani / Brown Noddy (Anous stolidus) sitting on a washed up nautical buoy, Rocas Atoll, Brazil

Franco Banfi / Offshore Wylde Swan, fast sailing vessel, 63 metres long with 269 gross tonnage, originally built in Germany in 1920 as steam ship, designed to work with herring fleet. Dominica, Caribbean Sea, Atl...

Franco Banfi / Eendracht, three-masted schooner from the Netherlands, 59 meters long with sail area of 1,300 square meters, built in 1989 at Damen shipyard, currently used on charter base as sail training ship, with...

Franco Banfi / Eye of the Wind brigantine,40.23 meters long with sail area of 750 square meters, originally built as topsail schooner named Friedrich, built in 1911 at C. H. Lühring shipyard in Germany. Dominica. C...

Mike Potts / The Sir David Atteborough polar research boat in Holyhead Harbour, North Wales, where she was undergoing sea trials in the Irish Sea.

Solvin Zankl / A research submersible navigating underwater near the Lophelia sulareef, Trondheimfjord, North Atlantic Ocean, Norway.

Alex Mustard / A panoramamic composite of the USS Kittiwake wreck (US Military submarine rescue vessel) lying next to a coral reef. Seven Mile Beach, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.

David Fleetham / The Atlantis submarine cruising by a reef off the coast of Maui, Hawaii.