Klein & Hubert / Siberian / Amur tiger (Panthera tigris altaica) walking in snow at sunrise, captive, occurs Far East and Northeast China.

Maxime Aliaga / Keepers holding hands of infant Sumatran orangutan (Pongo abelii) as they walk to 'forest school' ,Quarantine centre of SOCP (Sumatran Orangutan Conservation Program) near Medan, North Sumatra

Sergey Gorshkov / Siberian tiger (Panthera tigris altaica) at night, taken with remote camera in Land of the Leopard National Park, Far East Russia, November.Highly Commended in the Animal Portraits Category of the Wil...

Tony Wu / Harlequin mantis shrimp (Odontodactylus scyllarus), close up of compound eyes. Lembeh Strait, North Sulawesi, Indonesia.

Olga Kamenskaya / Baikal seal (Pusa sibirica) pup on ice, endemic species. Lake Baikal, Russia, April.

Alex Mustard / Western clown anemonefish (Amphiprion ocellaris) poses with a large, dominant female behind. The clownfish in the foreground is probably a juvenile. Bitung, North Sulawesi, Indonesia. Lembeh Strait, M...

Clay Bolt / Wallace's giant bee (Megachile pluto) and nest on tree trunk. North Moluccas, Indonesia.T his is the only photo that is known to exist of this species (the world's largest bee) in the wild, in situ, a...

Clay Bolt / Blue-banded bee (Amegilla sp) males sleeping on stem. Halmahera, North Maluku, Indonesia.

Alex Mustard / Shoal of three Bigfin reef squid (Sepioteuthis lessoniana) in open water at night. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Portrait of a Giant frogfish (Antennarius commersoni) on a large Yellow elephant ear sponge (Ianthella basta). Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Orange painted frogfish (Antennarius pictus) fishing. Here the frogfish is illuminated by a snooted strobe and the background sand lit with a red LED torch. Bitung, North Sulawesi, Indonesia. Lembeh S...

Alex Mustard / Free swimming mimic octopus (Thaumoctopus mimicus). Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Free swimming mimic octopus (Thaumoctopus mimicus). Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Thorny seahorse (Hippocampus histrix) gripping onto a sponge. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Pair of Western clown anemonefish (Amphiprion ocellaris) spawning orange eggs on the rock beneath their Magnificent sea anemone (Heteractis magnifica) home on a coral reef. This photo shows the larger...

Alex Mustard / Two female Common seahorses (Hippocampus kuda) fighting over territory on the seabed. The brief fight was preceeded by a ritualised, synchronised parade. Bitung, North Sulawesi, Indonesia. Lembeh Stra...

Alex Mustard / Common seahorse (Hippocampus kuda) female wrapping her prehensile tail around piece of wood on the seabed. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Veined octopus (Amphioctopus marginatus) shelters inside an old clam shell, with silver-sides in the water above. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Whitemargin stargazer (Uranoscopus sulphureus) sets an ambush in the sand at night. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Veined octopus (Amphioctopus marginatus) emerging from its home in an old clam shell. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Reef lizardifsh (Synodus variegatus) at a cleaning station, being cleaned by Holthuis anemone shrimps (Ancylomenes holthuisi). Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Ingo Arndt / Sun rising over ice formations on Lake Baikal. Siberia, Russia. February 2019.

Andrew Walmsley / Sumatran orangutan (Pongo abelii) mother and baby Bukit Lawang, North Sumatra.

Georgette Douwma / Shortfin lionfish (Dendrochirus brachypterus). Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Nudibranch (Chromodoris willani) with a scale worm. Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Ribbon eel ( Rhinomuraena quaesita) Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Colonial anemones (Amphianthus nitidus) with Green urn sea squirts (Didemnum molle) (Atriolum robustum). Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Corkscrew or Long tentacle anemone (Macrodactyla doreensis). Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Banggai cardinalfish (Pterapogon kauderni) with a Corkscrew or Long tentacle anemone (Macrodactyla doreensis). Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Thornback cowfish (Lactoria fornasini). Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Boxer Crab (Lybia tessellata) with sea anemones in its claws for defense. Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Taylor's pygmy leatherjacket (Brachaluteres taylori). Lembeh Strait, North Sulawesi, Indonesia.

Tim Laman / Tapanuli orangutan (Pongo tapanuliensis) Togus, adult flanged male, Batang Toru Forest. Sumatran Orangutan Conservation Project, North Sumatran Province, Indonesia.

Tim Laman / Tapanuli Orangutan (Pongo tapanuliensis). Togus, adult flanged male Batang Toru Forest Sumatran Orangutan Conservation Project North Sumatran Province Indonesia

Tim Laman / Tapanuli Orangutan (Pongo tapanuliensis). Togus, adult flanged male. Batang Toru Forest, Sumatran Orangutan Conservation Project, North Sumatran Province, Indonesia.

Tim Laman / Tapanuli Orangutan (Pongo tapanuliensis) Beti, juvenile female, daughter of Beta, in the trees, Batang Toru Forest, Sumatran Orangutan Conservation Project, North Sumatran Province, Indonesia

Clay Bolt / Entomologist examining a large female Megachile bee during the hunt to rediscover Wallace's giant bee (Megachile pluto) on the island of Ternate, North Moluccas, Indonesia. January 2019

Alex Mustard / Veined octopus (Amphioctopus marginatus) sheltering in an old clam shell, with plankton swirling around it at night (captured as trails in the long exposure). Bitung, North Sulawesi, Indonesia. Lembeh...