Michael Pitts / Hydroids growing on hull of tugboat ''Blue Plunder'' wreck, Nassau, Bahamas. July 2008.
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Alex Mustard / Hull of a boat in shallow water, over sand ripples. North Sound, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea
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Ashley Cooper / The Russian research vessel, AkademiK Sergey Vavilov an ice strengthened ship on an expedition cruise to Northern Svalbard, Norway, July 2013
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Sue Flood / Wide angle shot of bow of Russian icebreaker Kapitan Khlebnikov in sea ice, Cape Washington, Ross Sea, Antarctica.
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Richard Robinson / Pelagic Bottlenose dolphin (Tursiops truncatus ) rides the bow of a Maersk container ship, Northern New Zealand Editorial use only.
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Andy Rouse / Polar bear (Ursus arctos) standing against tourist ship, Svalbard, Norway.
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Chris & Monique Fallows / Long-beaked common dolphins (Delphinus capensis) breaching in front of large ship during sardine run, off East London, South Africa, June.
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Chris & Monique Fallows / Long-beaked common dolphin (Delphinus capensis) breaching in front of large ship during sardine run, off East London, South Africa, June.
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Chris & Monique Fallows / Long-beaked common dolphins (Delphinus capensis) breaching in front of large ship during sardine run, off East London, South Africa, June.
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Chris & Monique Fallows / Long-beaked common dolphins (Delphinus capensis) breaching in front of large ship during sardine run, off East London, South Africa, June.
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Alex Hyde / Wrecked barge in front of Saltend Chemical Plant, Kingston upon Hull, East Yorkshire, England, UK, January 2014.
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Alex Hyde / Humber Bridge crossing the Humber estuary. Kingston upon Hull, East Yorkshire, England, UK. January 2014.
