Ingo Arndt / Vogelkop bowerbird (Amblyornis inornatus) decoration material (fruit and beetle elytra ) collected in order to attract females to his bower, Arfak Mountains, Irian Jaya, New Guinea, Indonesia.

Pal Hermansen / Blizzard on the coast of Lofoten in black and white, Norway, March. Winner of the Natural Adversities category of the Asferico Competition 2015.

Alex Hyde / Chlorophyte or green alga (Volvox aureus) in pond water. UK. The larger spheres are approximately 0.5mm in diameter. Digital composite image.

Jeff Rotman / Close-up of skin of a Hieroglyphic hawkfish (Cirrhitus rivulatus). Cocos Island, Costa Rica, Pacific Ocean.

Alex Mustard,Alex Mustard / A blue light fluorescence photo of Jewel anemones (Corynactis viridis). The blue light source excites the fluorescent pigments in the anemones, which emit light of other colours. The muddy seabed and...

Markus Varesvuo / Large flock of Kittiwakes (Rissa tridactyla) flying over the sea, Vardo, Norway, March.

Neil Aldridge / Portrait of an African wild dog (Lycaon pictus) wearing a radio collar in dense mopane bushveld, Venetia Limpopo Nature Reserve, Limpopo Province, South Africa, February 2010.

Andy Rouse,Andy Rouse / Indri (Indri indri) portrait. Madagascar.

Alex Mustard / Brain coral (Pseudodiploria strigosa) photographed under blue light to excite the fluorescence, Little Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Edwin Giesbers / Crowned crane (Balearica regulorum) close-up of feathers, captive

Juan Carlos Munoz / Jersey tiger moth (Euplagia quadripunctaria) large numbers resting on trunk of Sweetgum tree (Liquidambar orientalis) in the Petaloudes Valley, Rhodes island, Greece, August 2011

Juergen Freund / Denise's pygmy seahorse (Hippocampus denise) in its fan coral. Misool, Raja Ampat, West Papua, Indonesia