Jeff Foott / Sunwapta Falls, Sunwapta River, Jasper National Park, Alberta, Canada

Jeff Foott / Waterfall after autumn snowfall, Tangle Creek Falls, Jasper National Park, Alberta, Canada

Jeff Foott / Indian Rhubarb (Darmera peltata) growing on rock in river, Cascade Creek, Yosemite National Park, California

Jeff Foott / Spring run-off, Cascade Creek, Yosemite National Park, California

Guy Edwardes / Wave in sea off Isle of Harris, Outer Hebrides, Scotland, UK. Long time exposure

Konrad Wothe / Firefly (Lamprohiza splendidula) light tracks in forest, Bavaria, Germany

Pal Hermansen / Bear (Ursus arctos) silhouetted at night under starry sky. Finland. August.

Yashpal Rathore / Composite image of Fireflies synchronize display just after first shower of monsoon, on moonless night. India.

Juergen Freund / Timelapse of Fireflies (Lampyridae) flying around a tree, Bicol, Philippines.

Juergen Freund / Timelapse of Fireflies (Lampyridae) flying around a tree, Bicol, Philippines.

Juergen Freund / Timelapse of Boab trees (Adansonia gregorii) at night, with star trails, Kimberley, Western Australia, 2016.

Guy Edwardes / Cauldron Force, West Burton, Yorkshire Dales National Park, North Yorkshire, England, UK, June.