A fishing vessel sails in the ice fjord near Ilulissat, Greenland September 12, 2017. Picture taken September 12, 2017. REUTERS/Jacob Gronholt-Pedersen

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson SEARCH "POY GLOBAL" FOR FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2018 PACKAGES. TPX IMAGES OF THE DAY.

A fishing boat is anchored in the natural harbor of Kopangen in Lyngen-Fiord, north of the Arctic Circle, October 1, 2014. Picture taken October 1, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL MARITIME)

The Aurora Borealis (Northern Lights) is seen over the Bals-Fiord near the village of Mestervik, north of the Arctic Circle, early October 2, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL TPX IMAGES OF THE DAY)

A view of Lyngen-Fiord and the snow-capped Lyngen Alps near the village of Furuflaten, north of the Arctic Circle, October 1, 2014. Picture taken October 1, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL TPX IMAGES OF THE DAY)

A view of Lyngen-Fiord, north of the Arctic Circle, northern Norway October 1, 2014. Picture taken October 1, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL)

A fishing boat is anchored in the natural harbor of Kopangen in Lyngen-Fiord, north of the Arctic Circle, October 1, 2014. Picture taken October 1, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL)

A tourist takes photos of an Aurora Borealis (Northern Lights) over the Bals-Fiord north of the Arctic Circle, near the village of Mestervik late September 30, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL SOCIETY)

An Aurora Borealis (Northern Lights) is seen at the Bals-Fiord north of the Arctic Circle, near the village of Mestervik late September 30, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL SOCIETY)

An Aurora Borealis (Northern Lights) is seen over a fishing harbour at the Bals-Fiord north of the Arctic Circle, near the village of Mestervik late September 30, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL SOCIETY)

A tourist takes photos of an Aurora Borealis display (Northern Lights) over the Bals-Fiord north of the Arctic Circle, near the village of Mestervik late September 30, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL SOCIETY)

Cormorants rest on poles in Bals-Fiord, north of the Arctic Circle, near the village of Mestervik in northern Norway September 30, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL)

A man casts his fishing line in Bals-Fiord, north of the Arctic Circle, near the village of Mestervik in northern Norway September 30, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL TPX IMAGES OF THE DAY)

A man casts his fishing line in Bals-Fiord, north of the Arctic Circle, near the village of Mestervik in northern Norway September 30, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL)

A man casts his fishing line in Bals-Fiord, north of the Arctic Circle, near the village of Mestervik in northern Norway September 30, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL)

General view of a small harbour and snow-capped mountains in Bals-Fiord, north of the Arctic Circle, near the village of Mestervik in northern Norway September 30, 2014. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL SOCIETY)

A bridge connects parts of Senja island over a fiord, north of the Arctic Circle in Norway September 29, 2014.REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL)

Tourists return to a small harbor after spending the day fishing in North-Fiord, north of the Arctic Circle, near the village of Mestervik in northern Norway September 28, 2014. Tourists are gathering this time of the year in northern Norway to admire the phenomenon of the Northern Lights. REUTERS/Yannis Behrakis (NORWAY - Tags: ENVIRONMENT TRAVEL SOCIETY)

The Canadian Coast Guard patrol boat CCGS Gordon Reio departs the Burrard Inlet under the Lions Gate Bridge while heading to sea in Vancouver, British Columbia January 3, 2011. REUTERS/Andy Clark (CANADA - Tags: SOCIETY CITYSCAPE)

A group of kayaks are tied up in a fjord near the south Greenland town of Narsaq July 28, 2009. REUTERS/Bob Strong (GREENLAND)

A deep blue iceberg floats in a fjord south of Tasiilaq in eastern Greenland August 2, 2009. The blue color is a result of compression and repeated thawing and refreezing. REUTERS/Bob Strong (GREENLAND)

A fisherman walks to his boat in Isortoq, a small settlement south of Tasiilaq August 4, 2009. REUTERS/Bob Strong (GREENLAND)

Icebergs float in a fjord near the east Greenland town of Kulusuk August 5, 2009. REUTERS/Bob Strong (GREENLAND)

Icebergs float in the calm waters of a fjord, south of Tasiilaq in eastern Greenland August 4, 2009. REUTERS/Bob Strong (GREENLAND ENVIRONMENT)

An iceberg floats in a fjord near the town of Kulusuk in eastern Greenland August 2, 2009. REUTERS/Bob Strong (GREENLAND ENVIRONMENT)

Icebergs float in a fjord near the south Greenland town of Narsaq July 28, 2009. REUTERS/Bob Strong (GREENLAND ENVIRONMENT IMAGES OF THE DAY)

A large iceberg floats in a fjord near the south Greenland town of Narsaq July 27, 2009. REUTERS/Bob Strong (GREENLAND ENVIRONMENT)

Wildflowers bloom on a hill overlooking a fjord filled with icebergs near the south Greenland town of Narsaq July 27, 2009. REUTERS/Bob Strong (GREENLAND ENVIRONMENT TRAVEL IMAGES OF THE DAY)

Icebergs are reflected in the waters of Eriks Fjord near the town of Narsarsuaq in southern Greenland July 26, 2009. REUTERS/Bob Strong (GREENLAND ENVIRONMENT TRAVEL)

A large iceberg floats in Eriks Fjord near the town of Narsarsuaq in southern Greenland July 26, 2009. REUTERS/Bob Strong (GREENLAND ENVIRONMENT TRAVEL)

Icebergs are reflected in the calm waters at the mouth of the Jakobshavn ice fjord near Ilulissat in Greenland in this photo taken May 15, 2007. New York, Boston and other cities on North America's northeast coast could face a rise in sea level this century that would exceed forecasts for the rest of the planet if Greenland's ice sheet keeps melting as fast as it is now, researchers said May 27, 2009. Sea levels off the northeast coast of North America could rise by 12 to 20 inches more than other coastal areas if the Greenland glacier-melt continues to accelerate at its present pace, the researchers reported. REUTERS/Bob Strong/Files (GREENLAND ENVIRONMENT SOCIETY)

A container ship departs Burrard Inlet in Vancouver, British Columbia March 6, 2009. REUTERS/Andy Clark (CANADA)

Magallanes gooses fly over the Ultima Esperanza fiord next to Puerto Eden at the Patagonia region, November 29, 2008. REUTERS/Simon Gardner (CHILE)

Norwegian farms are reflected in the still waters of a fjord in western Norway October 6, 2007. REUTERS/Bob Strong (NORWAY)

Autumn leaves are reflected in the still waters of a fjord as the sun rises west of Drammen October 6, 2007. REUTERS/Bob Strong (NORWAY) BEST QUALITY AVAILABLE

An iceberg is pictured in Ilulissat fjord in Greenland August 16, 2007, during the visit of German Chancellor Angela Merkel and Environment Minister Sigmar Gabriel to the region. Merkel and Gabriel are on a two day visit to Greenland to get information on consequences of global warming. REUTERS/Michael Kappeler/Pool (GREENLAND)

Picture shows a fjord behind the town of Ilulissat in Greenland August 16, 2007, during the visit of German Chancellor Angela Merkel and Environment Minister Sigmar Gabriel to the region. Merkel and Gabriel are on a two day visit to Greenland to get information on consequences of global warming. REUTERS/Michael Kappeler/Pool (GREENLAND)

Picture shows a fjord behind the town of Ilulissat in Greenland August 16, 2007, during the visit of German Chancellor Angela Merkel and Environment Minister Sigmar Gabriel to the region. Merkel and Gabriel are on a two day visit to Greenland to get information on consequences of global warming. REUTERS/Michael Kappeler/Pool (GREENLAND)

Picture shows a fjord behind the town of Ilulissat in Greenland August 16, 2007, during the visit of German Chancellor Angela Merkel and Environment Minister Sigmar Gabriel to the region. Merkel and Gabriel are on a two day visit to Greenland to get information on consequences of global warming. REUTERS/Michael Kappeler/Pool (GREENLAND)

Picture shows a fjord behind the town of Ilulissat in Greenland August 16, 2007, during the visit of German Chancellor Angela Merkel and Environment Minister Sigmar Gabriel to the region. Merkel and Gabriel are on a two day visit to Greenland to get information on consequences of global warming. REUTERS/Michael Kappeler/Pool (GREENLAND)

German Chancellor Angela Merkel stands aboard a ship during a visit to a fjord near Ilulissat in Greenland August 16, 2007. Merkel and Environment Minister Sigmar Gabriel are on a two day visit to Greenland to get information on consequences of global warming. REUTERS/Michael Kappeler/Pool (GREENLAND)

A boat, carrying German Chancellor Angela Merkel, Environment Minister Sigmar Gabriel, Denmark's Prime Minister Anders Fogh Rasmussen and Environment Minister Connie Hedegaard and Greenland's Prime Minister Hans Enoksen, sails through Ilulissat fjord in Greenland August 16, 2007. Merkel and Gabriel are on a two day visit to Greenland to get information on consequences of global warming. REUTERS/Michael Kappeler/Pool (GREENLAND)

A boat, carrying German Chancellor Angela Merkel, Environment Minister Sigmar Gabriel, Denmark's Prime Minister Anders Fogh Rasmussen and Environment Minister Connie Hedegaard and Greenland's Prime Minister Hans Enoksen, sails through Ilulissat fjord in Greenland August 16, 2007. Merkel and Gabriel are on a two day visit to Greenland to get information on consequences of global warming. REUTERS/Michael Kappeler/Pool (GREENLAND)

A boat, carrying German Chancellor Angela Merkel, Environment Minister Sigmar Gabriel, Denmark's Prime Minister Anders Fogh Rasmussen and Environment Minister Connie Hedegaard and Greenland's Prime Minister Hans Enoksen, sails through Ilulissat fjord in Greenland August 16, 2007. Merkel and Gabriel are on a two day visit to Greenland to get information on consequences of global warming. REUTERS/Michael Kappeler/Pool (GREENLAND)

A ship is pictured in a fjord at Ilulisaat in Greenland August 16, 2007, during the visit of German Chancellor Angela Merkel and Environment Minister Sigmar Gabriel to the region. Merkel and Gabriel are on a two day visit to Greenland to get information on consequences of global warming. REUTERS/Michael Kappeler/Pool (GREENLAND)

A sculptured iceberg sits at the mouth of the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/Bob Strong (GREENLAND)

A fishing boat sails past icebergs at the mouth of the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/Bob Strong (GREENLAND)

A fishing boat sails past icebergs at the mouth of the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/Bob Strong (GREENLAND)

Icebergs are reflected in the calm waters at the mouth of the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/Bob Strong (GREENLAND)

Icebergs are reflected in the calm waters at the mouth of the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/Bob Strong (GREENLAND) BEST QUALITY AVAILABLE

Icebergs crowd the mouth of the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/Bob Strong (GREENLAND)

Icebergs crowd the mouth of the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/Bob Strong (GREENLAND)

Tour boat captain Edvard Samuelson watches icebergs during a trip to the mouth of the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/Bob Strong (GREENLAND)

Tour boat captain Edvard Samuelson watches icebergs during a trip to the mouth of the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/Bob Strong (GREENLAND)

A tourist boat approaches icebergs in Disko Bay at the mouth of the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/Bob Strong (GREENLAND)

Tourists view icebergs in Disko Bay at the mouth of the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/Bob Strong (GREENLAND)

Local guide Vilhelmina Nathanielsen sits on a bench overlooking the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/BOB STRONG (GREENLAND)

Local guide Vilhelmina Nathanielsen walks across rocks overlooking the Jakobshavn ice fjord near Ilulissat in this photo taken May 15, 2007. REUTERS/BOB STRONG (GREENLAND)

A fishing boat sails past a large iceberg at the mouth of the Jakobshavns ice fjord near Ilulissat in this photo taken May 15, 2007. Picture taken May 15, 2007. REUTERS/Bob Strong (GREENLAND)

Sunlight shines just after midnight on a fjord near the Norwegian Arctic town of Longyearbyen, April 26, 2007. The sea water is normally frozen solid at this time of year but global warming may be warming the region. REUTERS/Francois Lenoir (NORWAY)