Tui De Roy / Glacier with tourist expedition in inflatable zodiac, southern Greenland Fjords, Greenland
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Konrad Wothe / Tourists on Russian icebreaker breaking through pack ice, Antarctica
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Flip Nicklin / Orca (Orcinus orca) leaping, watched by tourists from Stubbs Island charter boat, Johnstone Strait, northeast Vancouver Island, Canada
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Flip Nicklin / Humpback Whale (Megaptera novaeangliae) tails and sailboat with whale watching tour, Hawaii
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Mitsuaki Iwago / Cruise ship in storm, Antarctica
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Flip Nicklin / Gray Whale (Eschrichtius robustus) touched by tourists, San Ignacio Lagoon, Baja California, Mexico
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Norbert Wu / Perry submersible used to bring tourists to deep sea, 1,000 meters depth, Grand Cayman, Caribbean
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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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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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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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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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Ashley Cooper / The Russian research vessel, AkademiK Sergey Vavilov an ice strengthened ship on an expedition cruise to Northern Svalbard, Norway, July 2013
