Piece of glacial ice washed ashore by the incoming tide onto beach of volcanic sand near glacial lagoon at Jokulsarlon, Iceland, Polar Regions

Piece of glacial ice washed ashore by the incoming tide near glacial lagoon at Jokulsarlon, Iceland, Polar Regions

Godafoss or Fall of the Gods, horseshoe falls on the 175m long glacial Skjalfandafljot River in a 7000 year old lava field, Godafoss, Iceland

Glacial iceberg detail from ice calved off the Sawyer Glacier in Tracy Arm, Southeast Alaska, United States of America

Glacial iceberg detail from ice calved off the Sawyer Glacier in Tracy Arm, Southeast Alaska, United States of America

Glacial iceberg detail from ice calved off the Sawyer Glacier in Tracy Arm, Southeast Alaska, United States of America

Glacial iceberg detail from ice calved off the LeConte Glacier near Petersberg, Southeast Alaska, United States of America

Polar bear on ice looking at camera, Svalbard and Jan Mayen, Norway, Polar Regions

Floating icebergs, Ilulissat Icefjord, UNESCO World Heritage Site, Western Greenland, Denmark, Polar Regions

Aerial of the Ilulissat Icefjord, UNESCO World Heritage Site, Western Greenland, Denmark, Polar Regions

The Lindblad Expedition ship National Geographic Explorer near glacial run-off in the Svalbard Archipelago, Norway, Arctic, Europe

Malaspina Glacier, Alaska

Large ice block laying on the shores of Southern Iceland while waves crash on shore, Iceland

Large ice block laying on the shores of Southern Iceland while waves crash on shore, Iceland