Onne van der Wal / Farr 40's on the starting line at their World Championships, Bahamas, Caribbean.

Jurgen Freund / Lightning at night, Danjugan Island, Negros, Philippines, with local fishermen preparing their kerosine lamps and canoe on beach in the foreground.

Fred Olivier / Southern lights, Aurora australis, over antarctic landscape, Antarctica

Staffan Widstrand / Arctic light in evening sk with , pink clouds. Grovelsjon NR, Dalarna, Sweden

Aflo / Y-10805 Forked lightning racing across sky at night

Onne van der Wal / 12 meters ^Northern Light^ and ^Gleam^ gliding under the Newport Bridge in fog, Rhode island, USA. Both boats are property released.

Christophe Courteau / Four lighthouse at night in stormy weather, Brittany, France

Doug Perrine / Sun shining through heavy rain squall, Grand Turk, Turks and Caicos Is, Caribbean

Philip Stephen / Fishing vessel trawling on a winter night in the North Sea. December 2008. Property released.

Rick Tomlinson / Wave breaks on the rocks near Valentia, south west Ireland.

Ingo Arndt / Cirrus clouds up in sky, California, USA

Philip Stephen / Oil rig ^Northern Producer^ in stormy conditions. North Sea, March 2009.

Rick Tomlinson / ^Intrum Justicia^ in the Southern Ocean during the Whitbread Round the World Race, 1993.

Aflo / Y-2701 Starbust Sun above clouds in blue sky

Aflo / Y-11806 View from Space of eye of Hurricane above Earth

Mark Taylor / Blue sky and clouds with sunbeams.

Kim Taylor / Raindrops falling into still water.

David Noton / Rough seas at Dingle Peninsula, Co Kerry, Southern Ireland

Rob Tilley / Dawn over Lake Pukaki, South Island, New Zealand. December 2002

Gary K. Smith / The Wash, Norfolk, beach landscape with storm clouds and bait diggers, UK, August

Onne van der Wal / Dangerous conditions for 88ft sloop ^Shaman^, cruising through ice and fog in Spitsbergen, Svalbard, Norway, 1998.

Jerry Monkman / Early morning fog in Bar Harbor obscures the view of The Margaret Todd, a four-masted schooner, Maine, USA

Staffan Widstrand / Arctic sunrise in Svalbard, Spitzbergen, Norway.

Onne van der Wal / A woman walking in a snow drift at the Beavertail Lighthouse on Jamestown, Rhode Island, USA.

Philip Stephen / MFV trawler ^Harvester^ in storm force gales and heavy seas, 70 miles east of the Shetlands. Winds gusting to 83 Knots. January 2009. Property Released.

Onne van der Wal / Glistening icicles hanging off an iceberg, Antarctica.

Peter Scoones / Rough seas Antarctica

Onne van der Wal / Squall over a racing yacht off Grenada, Caribbean.

Aflo / Y-11001 Double rainbow on horizon over sea

Roy Mangersnes / Waves getting whipped up by the wind while crossing the howling fifties in the Southern Ocean, Atlantic, Antarctica. November

Onne van der Wal / Two Tall ships in fog during Boston tall ships parade, Massachusetts, USA. ^Amerigo Vespucci^ is in the foregound.

Rick Tomlinson / Trent Class relief lifeboat based in Alderney, Channel Islands, breaks through heavy swell in the English Channel.

Onne van der Wal / Storm clouds over the 12 Metre yacht ^Columbia^ as she sails under the Newport Bridge during the Museum of Yachting Regatta, Rhode Island, USA

Mike Potts / Storm brewing along coast, Ascension Island, South Atlantic Ocean, 1987

Rick Tomlinson / Yacht beats upwind in breezy conditions off Miami, SORC, 1999.

Rick Tomlinson / The Fleetwood, Chester Lifeboat heads into to heavy weather. The first 'fast' slipway lifeboat. Features include low profile appearance of wheelhouse to fit boathouses, and separate cabin aft of upper...

Onne van der Wal / Aerial view, with clouds, of Exuma, part of the chain of 365 islands that form the Bahamas.

Benoit Stichelbaut / Tug ^Abeille Bourbon^ arriving at Brest in Heavy Weather. Brittany, France, April 2005.

Onne van der Wal / A 70 knot storm off Cape Horn, Chile. ^^^This area has a well-earned reputation for its mountainous seas and constant gales, caused by the build up of uninterrupted depressions circulating the Souther...

Onne van der Wal / Yacht racing with approaching squall.

Onne van der Wal / A weathered iceberg and snow covered mountain, Antarctica.

Onne van der Wal / 420's racing with approaching squalls off Newport, Rhode Island, USA

Onne van der Wal / A small boat during a race in the Grenada Sailing Festival is engulfed by a heavy squall, Grenada, Caribbean.

Onne van der Wal / A fleet of J44s sailing into a squall off Block Island, Rhode Island, USA.

Adrian Davies / Annular solar eclipse, viewed from southern England, UK, Europe

Jose B. Ruiz / Storm approaching beach at Cape Trafalgar, Canos de Meca, Cadiz, Spain

Jose B. Ruiz / Sky with clouds, Spain