Sven Zacek / Vahandu River in spate after snow melt. Southern Estonia, February 2013.

Eric Baccega / Aerial view of Devon Island, Nunavut, Canada, June 2012.

Inaki Relanzon / Blue ice melt pool in snow near the peak of La Munia Circo. The Pyrenees, Aragon, Spain, May 2011.

Diane McAllister / The snow at Horsetail Falls' begins to melt in mid-February, enabling the falls to resume once again. The clear sky and low sun angle ignite the rock wall during sundown. Yosemite National Park, Calif...

Alex Hyde / Dwarf snowbell (Soldanella pusilla) flower in snow. The plant generates heat by fermenting sugars to melt the surrounding snow. Austrian Alps, 2300 metres above sea level, June.

Staffan Widstrand / Bylot island, Baffin islands, melting sea ice in spring, Canad

Heather Angel / Blossom scarab beetle (Epicometis hirta) feeding on Ficaria flower (Ficaria fascicularis). In snow melt area, Turkey. May.

Heather Angel / Blossom scarab beetle (Epicometis hirta), two feeding on Ficaria flower (Ficaria fascicularis) with yellow leaves, having not yet developed chlorophyll. In snow melt area, Turkey. May.

Sven Zacek / Pattern of Conifer (Pinaceae) needles on snow, revealed following spring melt. Agusalu Nature Reserve, Ida-Virumaa, Eastern Estonia. April.

Franco Banfi / Diving gear under fallen snow belonging to divers who have waited for the spring melt to explore the waters around an iceberg. Tasiilaq, East Greenland. April 2018.

Heike Odermatt / Snow-covered ice with melted holes, Spitsbergen, Svalbard, Norway

Ashley Cooper / Raise Beck above Dunmail Raise, with large snow drift, Lake District, England, UK, April.