Gavin Hellier / Luxury cruise liner infront of Midtown Manhattan across the Hudson River, New York, USA October 2011. No release available.

Brent Stephenson / A cruise ship heads back up the Beagle Channel towards Ushuaia at the end of an Antarctic cruise. Beagle Channel, Tierra del Fuego Archipelago, South America, December.

Bryan and Cherry Alexander / Gentoo penguins (Pygoscelis papua) in blowing sand with the "Ocean Nova" anchored beyond. Saunders Island, Falkland Islands, 2009.

David Tipling / Cruise ship anchored off Hercules Bay, South Georgia, November 2006

David Fleetham / Aerial view of Norwegian cruise liner "Pride of Hawaii" moored in Kahalui harbour, Maui, Hawaii.

David Fleetham / Norwegian Cruise Line's "The Golden Princess" anchored off Lahaina, viewed through palms. Maui, Hawaii.

Mark MacEwen / Various boats coming in to harbour at Gibraltar, June 2013.

Jeff Vanuga / Tourists lining the deck ship Ushuaia in the Lemaire Channel clogged with sea ice, Antarctica.

Loic Poidevin / Geirangerfjord with liners, Stranda municipality, Sunnylvsfjorden UNESCO World Heritage Site, Norway, June 2010.

Loic Poidevin / Geirangerfjord with cruise ships , Stranda municipality, Sunnylvsfjorden UNESCO World Heritage Site, Norway, June 2010.

Enrique Lopez-Tapia / Antarctic cruise liner 'MV Ushuaia' front view, Antarctica.

Enrique Lopez-Tapia / Navigator working on a map on the bridge on an Antarctic cruise liner 'MV Ushuaia', Antarctica