Bert Willaert / School of Longfin spadefish (Platax teira), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Titicaca water frog (Telmatobius culeus) swimming underwater, Lake Titicaca, Bolivia. Critically endangered species.

Bert Willaert / Titicaca water frog (Telmatobius culeus) underwater resting on the lake bed, Lake Titicaca, Bolivia. Critically endangered species.

Bert Willaert / Marbled poison dart frog (Epipedobates boulengeri) on leaf, Ecuador.

Bert Willaert / View from the top of the Ozarde waterfalls near Koyna Lake during the monsoon. Western Ghats, India, August 2010.

Bert Willaert,Bert Willaert / Portrait of a Spiny-chest Frog (Alsodes norae) endemic to Oncol Park, Chile, January

Bert Willaert / Green-backed Firecrown (Sephanoides sephanoides) nesting next to a hiking trail in Mocha Island National Reserve, Mocha Island, Chile, December

Bert Willaert,Bert Willaert / Portrait of a Darwin's Frog (Rhinoderma darwinii) Chile, Vulnerable species

Bert Willaert,Bert Willaert / Chilean slender snake (Tachymenis chilensis chilensis) Contulmo Natural Monument, Chile, December

Bert Willaert,Bert Willaert / Chile Four-eyed Frog (Pleurodema thaul) showing how it got its name - eye spots on the back of it's body, Chile, December,. Controlled conditions,

Bert Willaert / Rio Jatuntianhua Robber Frog (Pristimantis eriphus) male on a leaf. Ecuador, Vulnerable species.

Bert Willaert / Natterjack toad (Epidalea calamita / Bufo calamita) next to an empty bullet cartridge on military land, Belgium, June.

Bert Willaert / Falconer showing his juvenile Red-backed Shrike (Lanius collurio) used to catch birds of prey for domestication, with eye hood, Georgia, September 2011. No release available.

Bert Willaert / Sparrowhawk (Accipiter nisus) being caught by a falconer using a Red-backed shrike (Lanius collurio) as bait, Georgia, September 2011.

Bert Willaert / Juvenile male Caucasus viper (Daboia raddei / Vipera kaznakovi), Georgia, September.

Bert Willaert / Hunter and his dog waiting for raptors to fly over, Georgia, September 2011. No release available.

Bert Willaert / Portrait of a Marbled newt (Triturus marmoratus), Portugal, April.

Bert Willaert / Composite image of American fish species introduced to Europe: Pumpkinseed sunfish (Lepomis gibbosus, left), Brown bullhead (Ameiurus nebulosus, right) and Eastern mudminnow (Umbra pygmaea, under), ph...

Bert Willaert / Brightly Coloured Poison-Dart Frog (Oophaga sylvatica). Ecuador, South America.

Bert Willaert / Juvenile South American Common / Crested Forest Toad 1+Rhinella margaritifera 'complex'+2. Ecuador, South America.

Bert Willaert / Hognosed Pit Viper (Porthidium nasutum) coiled. Ecuador, South America.

Bert Willaert / Trivandrum / Golden Frog (Hylarana aurantiaca) looking upwards. Western Ghats, India.

Bert Willaert / Male Humayun's Wrinkled Frog (Nyctibatrachus humayuni) calling next to egg clutches on leaves. Western Ghats, India.

Bert Willaert / Banded Ground Gecko (Geckoella deccanensis) portrait. Western Ghats, India, July.

Bert Willaert / Male Alpine Newt (Ichthyosaura / Triturus alpestris) in aquatic phase. Belgium. Captive.

Bert Willaert / Pair of mating Mouse Opossums (Marmosops cf. noctivagus) hanging from prehensile tail. Ecuador,

Bert Willaert / Amplectant pair of Natterjack Toads (Epidalea / Bufo calamita) with reflection in water. Belgium, Europe, July.

Bert Willaert / Great Sundew (Drosera anglica) peduncles, with sticky droplets to ensnare insects. Belarus, Europe, July.

Bert Willaert / Aquatic Warbler (Acrocephalus paludicola) perched. Belarus, Europe, September.

Bert Willaert / Large Psammodromus (Psammodromus algirus) on sand against habitat plains. Ebro Delta, Spain.

Bert Willaert / Large Psammodromus Lizard (Psammodromus algirus) against sand. Ebro Delta, Spain.

Bert Willaert / Portrait of Balearic Green Toad (Pseudepidalea balearica / Bufo balearicus) close up, Mallorca, The Mediterranean.

Bert Willaert / Large coral structure, Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Sea fan, soft corals and feather stars with Blackfin barracuda (Sphyraena qenie) swimming above. Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Decorated dartfish (Nemateleotris decora). Bismarck Sea - Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Variegated lizardfish (Synodus variegatus), Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Midnight snappers (Macolor macularis), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Hairy squat lobster (Lauriea siagiani) on giant barrel sponge. Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Crown of thorns starfish (Acanthaster planci), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Longfin spadefish (Platax teira), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Bignose unicornfish (Naso vlamingii), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / School of Blackfin barracuda (Sphyraena qenie), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Orbicular cardinalfish (Sphaeramia orbicularis), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Yaeyama blenny (Ecsenius yaeyamaensis), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Fire dartfish (Nemateleotris magnifica) Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Freckled hawkfish (Paracirrhites forsteri) Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Spinecheek anemonefish (Premnas biaculeatus) living in a symbiotic relationship with Bubble-tip anemone (Entacmaea quadricolor). Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Nudibranch (Chromodoris lochi), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Underwater landscape with Granular Sea Star (Choriaster granulatus), stag horn coral and sponge. Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Pair of Variegated lizardfish (Synodus variegatus), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Pink anemonefish (Amphiprion perideraion) in closed anemone. Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Reflection of coral reef in shallow water. Kimbe Bay, West New Britain, Papua New Guinea.

Bert Willaert / Magnificent shrimp (Ancylomenes magnificus), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Magnificent shrimp (Ancylomenes magnificus), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Detail of coral pattern, Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Closeup of a Orange-spotted grouper (Epinephelus coioides), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Midnight snapper (Macolor macularis) being cleaned by Bluestreak cleaner wrasse (Labroides dimidiatus), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Colorful anemones on coral reef, Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Clown anemonefish (Amphiprion percula) in anemone, Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Pregnant Whitetip reef shark (Triaenodon obesus) swimming above reef. Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Clown anemonefish (Amphiprion percula) in anemone, Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Jewel damselfish (Plectroglyphidodon lacrymatus), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Crocodile Flathead (Cymbacephalus beauforti), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Steinitz' Shrimp goby (Amblyeleotris steinitzi), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Clearfin lizardfish (Synodus dermatogenys) on top of hard coral. Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Segmented Blenny (Salarias segmentatus), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Frogfish (Antennarius sp.), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Pair of Lionfish (Pterois volitans) swimming over coral reef. Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Map pufferfish (Arothron mappa), Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Nudibranch (Glossodoris cincta), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / School of Blackfin barracuda (Sphyraena qenie), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Peacock mantis shrimp (Odontodactylus scyllarus), Kimbe Bay, West New Britain, Papua New Guinea

Bert Willaert / Variegated lizardfish (Synodus variegatus), Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Variegated lizardfish (Synodus variegatus), Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Clown anemonefish (Amphiprion percula), Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Wire coral goby (Bryaninops youngei) on yellow wire coral (Cirripathes anguina). Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Marbled shrimp (Saron cf. marmoratus) moulting. Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Close-up of a flathead on sea floor, Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Pink anemonefish (Amphiprion perideraion), Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Leaf scorpionfish (Taenianotus triacanthus), Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Orange sponge and soft corals on drop-off. Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Broadclub cuttlefish (Sepia latimanus), Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Giant barrel sponge (Xestospongia testudinaria) with feather stars (Crinoids). Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Oriental sweetlips (Plectorhinchus vittatus) and Harlequin sweetlips (Plectorhinchus chaetodonoides), Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Scorpionfish (Scorpaenopsis sp.) blending in to its environment. Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Feather stars (Crinoids) on Barrel sponge (Xestospongia testudinaria) and soft corals. Bismarck Sea - Vitu Islands, West New Britain, Papua New Guinea

Bert Willaert / Titicaca water frog (Telmatobius culeus) swimming underwater, Lake Titicaca, Bolivia. Critically endangered species.

Bert Willaert / Titicaca water frog (Telmatobius culeus) swimming underwater, Lake Titicaca, Bolivia. Critically endangered species.

Bert Willaert / Titicaca water frog (Telmatobius culeus) swimming underwater, Lake Titicaca, Bolivia. Critically endangered species.

Bert Willaert / Titicaca water frog (Telmatobius culeus) swimming underwater, Lake Titicaca, Bolivia. Critically endangered species.

Bert Willaert / Titicaca water frog (Telmatobius culeus) underwater resting on the lake bed, Lake Titicaca, Bolivia. Critically endangered species.

Bert Willaert / Titicaca water frog (Telmatobius culeus) underwater resting on the lake bed, Lake Titicaca, Bolivia. Critically endangered species.

Bert Willaert / Meadow cranesbill (Geranium pratense), Belgium, May.

Bert Willaert / Common spadefoot (Pelobates fuscus) in water with reflection, France, May.

Bert Willaert / Common spadefoot (Pelobates fuscus), France, May.

Bert Willaert / Common spadefoot (Pelobates fuscus), front view, France, May.