Jeff Wilson / Crew member of the US coastguard ship 'Healy' standing on the sea ice in front of the ship's hull after the ship became stuck in the ice, Bering Sea, Alaska, USA, March 2008. Taken on location for the...

Michael Pitts / Hydroids growing on hull of tugboat ''Blue Plunder'' wreck, Nassau, Bahamas. July 2008.

Alex Mustard / Hull of a boat in shallow water, over sand ripples. North Sound, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea

Ashley Cooper / The Russian research vessel, AkademiK Sergey Vavilov an ice strengthened ship on an expedition cruise to Northern Svalbard, Norway, July 2013

Ashley Cooper / Solar panels and wind turbines in Hull Yorkshire UK. September 2006

Ashley Cooper / solar panels and wind turbines in Hull Yorkshire UK. September 2006

Ashley Cooper / Coal on the docks in Hull, on the Humber Estuary, Yorkshire, England, UK. August.

Sue Flood / Wide angle shot of bow of Russian icebreaker Kapitan Khlebnikov in sea ice, Cape Washington, Ross Sea, Antarctica.

Graham Eaton / Hull Pot, Horton in Ribblesdale, Yorkshire, England, UK, January 2017. Hull Pot is a collapsed cave in Carboniferous age limestone. In wet conditions a stream flows into the pot and continues its jour...

Graham Eaton / Small stream dissapears over a waterfall into Hull Pot, Horton in Ribblesdale, Yorkshire, England, UK, January 2017. A walker can be seen in the mist in the background. Hull Pot is a collapsed cave co...

Graham Eaton / Hull Pot, Horton in Ribblesdale, Yorkshire, England, UK, January 2017. Hull Pot is a collapsed cave in Carboniferous age limestone. In wet conditions a stream flows into the pot and continues its jour...

Graham Eaton / Hull Pot, Horton in Ribblesdale, Yorkshire, England, UK, January. Hull Pot is a collapsed cave in Carboniferous age limestone. In wet conditions a stream flows into the pot and continues its journey i...