Lassi Rautiainen / Northern lights in moonlit sky, northern Finland, March 2009

Juergen Freund / Fluorescent coral viewed under UV light, Misool, Raja Ampat, West Papua, Indonesia, sequence 2/2

Daniel Heuclin / Ventral view of Wagler's / Temple Pitviper (Tropidolaemus wagleri). Controlled conditions. Mindanao, Philippines, February.

Daniel Heuclin / Portrait of Wagler's / Temple Pitviper (Tropidolaemus wagleri) showing the thermo-receptive pit organ between the eye and mouth. Controlled conditions. Mindanao, Philippines, February.

Daniel Heuclin / Portrait of Wagler's / Temple Pitviper (Tropidolaemus wagleri) showing the thermo-receptive pit organ between the eye and mouth. Controlled conditions. Mindanao, Philippines, February.

Floris van Breugel / A rock collector explores piles of fluorescent minerals found in the tailings of the Pacific Tungsten Mine near Darwin, California. The bright colours are caused by fluorescence excited by a shortwave...

Bence Mate / Head portrait of Satiny Parrot snake (Leptophis depressirostris) swallowing frog, Hungary, Europe

Alex Hyde / Malagasy green lynx spider {Peucetia madagascariensis} photographed on a white background. Masoala Peninsula National Park, north east Madagascar.

Tim Laman / Wagler's / Temple pit viper (Tropidolaemus wagleri) in lowland rainforest, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Stephen Dalton / Close up of eye of Common green iguana (Iguana iguana)

Niall Benvie / Enteromorpha seaweed rooted in sand, exposed by spring tide, Scotland, uk

Stephen Dalton / Orange winged amazon parrot (Amazona amazonica) in flight.