Steve Knell / Boreray, under low cloud cover. This holds the largest gannetry in UK (60,000 pairs) St. Kilda, Scotland, July 2009

Eric Baccega / Devon Island, under cloud covered sky, Nunavut, Canada. August 2010

David Noton / Emerald Lake at dawn with the peaks of the President Range beyond, Yoho National Park, British Columbia, Canada. September 2009

Inaki Relanzon / Fog between the mountains. Lagos de Covadonga (Covadonga Lakes) in Picos de Europa National Park, Cantabria, Spain. October 2009

Roy Mangersnes / Two Cape / Pintado Petrels (Daption capense) in flight over Point Wild on Elephant Island, Southern Ocean, November.

Angelo Gandolfi / Bearded vulture (Gypaetus barbatus) flying over the Pyrenees mountains, Aragon, Spain.

Martin Gabriel / Arenal Volcano with crown of clouds around the summit at sunrise, La Fortuna, Costa Rica, February 2009

Jeff Vanuga / Bison herd grazing in spring with Grand Teton mountains in background, Grand Teton National Park, Wyoming, USA, April 2009

Jouan & Rius / Quiraing mountains with low cloud cover, Isle of Skye, Inner Hebrides, Scotland, UK

Jouan & Rius / Quiraing mountains with low cloud cover, Isle of Skye, Inner Hebrides, Scotland, UK

Jouan & Rius / Cloud forest with low cloud cover, Santa Elena Nature Reserve, Costa Rica

Guy Edwardes / Aerial view of Julian Alps with cloud cover, Slovenia, January 2014.