Alex Mustard / A diver explores Silfra Canyon, a deep fault filled with fresh water in the rift valley between the Eurasian and American tectonic plates at Thingvellir National Park, Iceland. May 2011. In this phot...

SCOTLAND: The Big Picture / Feral sheep with Galtachan islands behind, Shiant Isles, Outer Hebrides, Scotland, UK. June 2018

Guy Edwardes / View from Colmer's Hill over countryside with low lying mist, Bridport, Dorset, England, UK. April 2016.

Bernard Castelein / Heather (Calluna vulgaris) at dawn, with distant trees, Klein Schietveld, Brasschaat, Belgium

Bernard Castelein / Heather (Calluna vulgaris) at dawn, with distant trees, Klein Schietveld, Brasschaat, Belgium

Jack Dykinga / Twisted Saguaro cactus (Carnegiea gigantea) with the Milky Way and distant glow of Phoenix lights, Sonoran Desert National Monument, South Maricopa Mountains Wilderness, Arizona, USA. September 2017.

Anup Shah / Southern plains grey langur / Hanuman langurs (Semnopithecus dussumieri) playing on the cliff tops at sunrise . Jodhpur, Rajasthan, India. March.

Charlie Summers / Andrommeda (M31) with its two syster galaxies (M32 and M110) Eastern Colorado. 8 November 2015. Taken with digital focus stacking.

Gerrit Vyn / Rain showers over sagebrush-steppe at the foot of the Sawtooth Mountains. Clark County, Idaho, USA, June.

Gerrit Vyn / Jonah natural gas field south of Pinedale, Wyoming.

Mark Hamblin / Mountain hare (Lepus timidus) in white winter coat stretching - in snowy habitat, Scotland. Highly Commended in the Mammals category of the GDT European Photographer of the Year Competition 2015.

Juan Carlos Munoz / Partially harvested Lavender (Lavendula angustifolia) fields, Valensole Plateau, Alpes Haute Provence, France, July 2015.