Stephen Dalton / House spider (Tegenaria sp) lurking at entrance of funnel web, UK, Agelenidae

Fred Bavendam / Common Lionfish (Pterois volitans) lurking among Feather Star Crinoids clinging to the lip of a large Barrel Sponge, Bali, Indonesia

Charlie Summers / Yellow baboon (Papio cynocephalus) juveniles running across a shallow part of the Ruaha River to avoid Crocodiles lurking nearby, Ruaha National Park, Tanzania.

Alex Mustard / Pike (Esox lucius) lurking in weeds. Stoney Cove Lake, Leicestershire, England, UK.

Jan Hamrsky / White-legged damselfly nymph (Platycnemis pennipes) lurking for prey, Europe, July, controlled conditions

Jan Hamrsky / Spiketail dragonfly nymph (Cordulegaster boltonii) hidden in sand and lurking for prey, Eupope, July, controlled conditions

Shibai Xiao / Hundred pace pitviper (Deinagkistrodon acutus) lurking along stoney path, Guizhou Province, China.

Tim Laman / Saddleback / Blacksaddle coral grouper (Plectropomus laevis) lurking amongst corals on the Liberty shiprwreck, Tulamben, Bali, Indonesia, May 2006

Stephen Dalton / House spider (Tegenaria domestica) lurking at entrance of funnel web, UK, Agelenidae

Andy Rouse / Leopard (Panthera pardus) lurking in undergrowth, Masai Mara, Kenya, Africa

Juergen Freund / Lifeguard removing Jellyfish from net, after clearing stinger-resistant enclosure, Queensland, Australia Note - Surf Lifesaving Queensland have an effective policy of dragging nets through the water...

Willem Kolvoort / Pike (Esox lucius) lurking under aquatic plants in sand winning pit, Holland

Solvin Zankl / Gentoo Penguin {Pygoscelis papua} switching from the horizontal swimming position to an upright walking posture, as fast as possible to avoid attack from Sealions lurking in the surf line. Falkland Is...

Franco Banfi / Cuvier's dwarf caiman (Paleosuchus palpebrosus) lurking on riverbed, Formoso River, Bonito, Mato Grosso do Sul, Brazil.

Ernie Janes / Pike (Esox lucius) juvenile, lurking among aquatic plants on riverbed, Norfolk Broads National Park, Norfolk, UK. April.

Danny Green / Salmon (Salmo sp.) leaping up waterfall with Grizzly bear (Ursus arctos) lurking in background, Brooks Falls, Katmai National Park, Alaska. July.

Michel Roggo / Group of Longnose suckers (Catostomus catostomus) at spawning ground in a remote river, with Rainbow trout (Oncorhynchus mykiss) lurking in background waiting to feed on released eggs, British Columbi...

Charlie Hamilton-James / Two Lions (Panthera leo) males, feeding on Eland (Taurotragus oryx) prey at dawn with Jackal (Canis sp.) and Vultures (Gyps sp.) lurking in background, Masai Mara, Kenya, Africa.

Etienne Littlefair / Mouth almighty (Glossamia aprion), lurking under a snag to ambush passing prey items, Lawn Hill Creek, Queensland, Australia, January.