Tony Wu / Twinspot snapper (Lutjanus bohar) shoal rushing up to spawn, releasing a cloud of milky white sperm and eggs in the water column. Caroline Islands, Palau, November.

Shattil & Rozinski,Shattil & Rozinski / Mule deer (Odocoileus hemionus), with the Denver skyline and Rocky Mountains in the background, Denver, Colorado, USA, November.

Markus Varesvuo / Kittiwake (Rissa tridactylus) vocalising, Vardo, Norway, March.

Markus Varesvuo / Male King eider (Somateria spectabilis) in flight over water, Batsfjord, Norway, March.

Georgette Douwma / Taylor's inflator filefish / Taylor's Pygmy Leatherjacket (Brachaluteres taylori) with a small amphipod, next to ascidian. West Papua, Indonesia. Indo-West Pacific.

David Fleetham / Painted frogfish (Antennarius pictus) with first dorsal spine and lure extended to attract prey. Dumaguete, Philippines.

Doug Perrine / Rover fish (Emmelichthyidae) juvenile sheltering inside a colonial salp at night in surface waters of deep ocean off Kailua Kona, Hawaii, USA.

Pal Hermansen / White wagtail (Motacilla alba alba) nesting in cupboard in house, Lofoten, Norway, June. Highly commended in the Urban Wildlife Category of the Wildlife Photograher of the Year Awards (WPOY) Competiti...

Tony Wu / Whitespotted bamboo shark (Chiloscyllium plagiosum) working his way into a crevice to approach female to mate. The males two claspers (the organs used for inseminating the female shark) are clearly vi...

Linda Pitkin / Pinnate batfish (Platax pinnatus), on coral reef beneath mangroves (Rhizophora sp.). Mangrove roots encrusted with tunicates (including Didemnum sp.), and soft coral (Dendronephthya sp.). Yanggefo Isl...

Georgette Douwma / Valentine's puffer (Canthigaster valentini) with Golden sea squirts (Polycarpa aurata) Lembeh, Sulawesi, Indonesia.