Walrus (Odobenus rosmarus) hauled out on pack ice to rest and sunbathe, Foxe Basin, Nunavut, Canada, North America

Walrus (Odobenus rosmarinus) females with baby hauled out on pack ice to rest and sunbathe, Foxe Basin, Nunavut, Canada, North America

Two walrus (Odobenus rosmarinus,) close-up of face, tusks, and vibrissae (whiskers), hauled out on pack ice to rest and sunbathe, Foxe Basin, Nunavut, Canada, North America

Walrus (Odobenus rosmarus) hauled out on pack ice to rest and sunbathe, Foxe Basin, Nunavut, Canada, North America

View of Gullfoss Waterfall on the Hvita River in winter, Western Region, Iceland

Aerial picture, night shot, Pauluskirche Church and christmas market, ice rink, Hamm, Ruhr area, North Rhine-Westphalia, Germany, Europe

Aerial picture, night shot, Pauluskirche Church and christmas market, ice rink, Hamm, Ruhr area, North Rhine-Westphalia, Germany, Europe

Skating rink at coking plant Zollverein, UNESCO World Cultural Heritage Site Zeche Zollverein, Essen, North Rhine-Westphalia, Germany, Europe

Skating rink at coking plant Zollverein, UNESCO World Cultural Heritage Site Zeche Zollverein, Essen, North Rhine-Westphalia, Germany, Europe

Ice skating rink at the Zollverein coking plant, UNESCO World Cultural Heritage Site Zeche Zollverein, Essen, Germany, Europe

Skating rink at coking plant Zollverein, UNESCO World Cultural Heritage Site Zeche Zollverein, Essen, North Rhine-Westphalia, Germany, Europe

Intercity-Express train, ICE, and a regional train, suburban train, on the track, railway, track network next to the main railway station in Essen, Essen, North Rhine-Westphalia, Germany, Europe

ICE, Intercity-Express train on the track, railway, track network next to the Essen main railway station, Essen, North Rhine-Westphalia, Germany, Europe

Museumshafen, museum harbour, with Christmas lights, North Sea resort of Carolinensiel, Wittmund region, North Sea, East Frisia, Lower Saxony, Germany, Europe

Snow-covered pressure gauge, Huettenwerk Meiderich steel mill after closure, today Duisburg-Nord Landscape Park, North Rhine-Westphalia, Germany, Europe

Aerial view, atolls on Baldeneysee lake, art event for the RUHR.2010, islands in the Baldeneysee lake, Schachtzeichen RUHR.2010 art installation, Essen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

ICE, Intercity-Express train on the track, railway, track network next to the Essen main railway station, Essen, North Rhine-Westphalia, Germany, Europe

Snow-covered pipes, Huettenwerk Meiderich steel mill after closure, today Duisburg-Nord Landscape Park, North Rhine-Westphalia, Germany, Europe

Aerial picture, ice-rink on Kennedy-Platz Square, Essen, Ruhr area, North Rhine-Westphalia, Germany, Europe

Harbour filled with ice floes, Christianshab, Greenland

Skating rink at coking plant Zollverein, UNESCO World Cultural Heritage Site Zeche Zollverein, Essen, North Rhine-Westphalia, Germany, Europe

Ship in the harbour of Ilulissat, Greenland

Essen city centre, skyline with various administrative and corporate buildings of large companies such as RWE and EVONIK, ICE Intercity-Express railway tracks of Essen central station, Essen, North Rhine-Westphalia, Germany, Europe

A woman hiking in front of glacial snout of ice in Titcomb Basin in the Wind River Range, Bridger Teton National Forest, Pinedale, Wyoming.

A backpacker in Ice Lake Basin near Silverton in the San Juan Mountains of southwestern Colorado

Annapurna Sanctuary, Nepal

Beer bottles in bucket of ice

Hofsos at Skagafjoerdur during winter, Iceland. Hofsos, a traditional fishing village with many historic buildings on the coast of Skagafjoerdur during winter. The municipal swimming pool. europe, northern europe, iceland, March

Hofsos at Skagafjoerdur during winter, Iceland. Hofsos, a traditional fishing village with many historic buildings on the coast of Skagafjoerdur during winter. The municipal swimming pool. europe, northern europe, iceland, March