John Shaw / Common loon (Gavia immer) with a chick alongside. British Columbia, Canada. June.

Nick Hawkins / Steller's sea lions (Eumetopias jubatus) off the coast of the Great Bear Rainforest, near Bella Bella, British Columbia, Canada. August

Nick Hawkins / Chum salmon (Oncorhynchus keta) migrate up a small river near Bella Bella, British Columbia, Canada. September

Jeff Foott / Mixed coniferous and deciduous forest after snowfall in autumn, Wells Gray Provincial Park, British Columbia, Canada

Alan Murphy/ BIA / Marsh Wren (Cistothorus palustris) calling, British Columbia, Canada

Alex Mustard / Red Irish lord (Hemilepidotus hemilepidotus) resting on a yellow sponge, in front of red soft coral (Eunephthya rubiformis). Browning Pass, Port Hardy, Vancouver Island, British Columbia. Canada. Nor...

Tim Zurowski/ BIA / Western Wood-Pewee (Contopus sordidulus), British Columbia, Canada

Tim Zurowski/ BIA / Steller's Jay (Cyanocitta stelleri), British Columbia, Canada

Tim Zurowski/ BIA / Spotted Towhee (Pipilo maculatus), British Columbia, Canada

Tim Zurowski/ BIA / Pileated Woodpecker (Dryocopus pileatus), British Columbia, Canada

Tim Zurowski/ BIA / Northern Flicker (Colaptes auratus) male, British Columbia, Canada

Yva Momatiuk & John Eastcott / Sockeye Salmon (Oncorhynchus nerka) group migrating upstream, Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada

Ingo Arndt / Sockeye Salmon (Oncorhynchus nerka) group swimming upstream during spawning run, Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada

Franco Banfi / Pacific octopus (Octopus dofleini) Vancouver Island, British Columbia, Canada, Pacific Ocean

Gerrit Vyn / Sandhill crane (Grus canadensis) British Columbia, Canada. December.

Alex Mustard / Red eye medusa (Polyorchis penicillatus) with hitchhiking amphipods (Hyperia medusarum). Browning Pass, Vancouver Island, British Columbia, Canada. North East Pacific Ocean.

Alex Mustard / Strawberry anemone (Utricina lofotensis) grows beneath Bull kelp forest (Nereocystis luetkeana). Browning Pass, Port Hardy, Vancouver Island, British Columbia. Canada. North East Pacific Ocean.

Yva Momatiuk & John Eastcott / Sockeye Salmon (Oncorhynchus nerka) migrating upstream, Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada

Tim Zurowski / Red Crossbill (Loxia curvirostra), British Columbia, Canada

Tim Zurowski / Red Crossbill (Loxia curvirostra), British Columbia, Canada

Tim Zurowski / Wood Duck (Aix sponsa) male calling, British Columbia, Canada

Tim Zurowski / Steller's Jay (Cyanocitta stelleri), British Columbia, Canada

Tim Zurowski / Steller's Jay (Cyanocitta stelleri), British Columbia, Canada

Tim Zurowski / Rufous Hummingbird (Selasphorus rufus) female feeding on flower nectar, British Columbia, Canada

Alan Murphy / Eastern Warbling-Vireo (Vireo gilvus) in nest, British Columbia, Canada

Alan Murphy / Eastern Warbling-Vireo (Vireo gilvus), British Columbia, Canada

Alan Murphy / Virginia Rail (Rallus limicola) calling, British Columbia, Canada

Alan Murphy / Yellow-headed Blackbird (Xanthocephalus xanthocephalus) male with insect prey, British Columbia, Canada

Alan Murphy / Western Tanager (Piranga ludoviciana) male, British Columbia, Canada

Alan Murphy / Tree Swallow (Tachycineta bicolor) male, British Columbia, Canada

Alan Murphy / Ruddy Duck (Oxyura jamaicensis) male in courtship display, British Columbia, Canada

Alan Murphy / Mountain Bluebird (Sialia currucoides) male, British Columbia, Canada

Alan Murphy / Marsh Wren (Cistothorus palustris) calling, British Columbia, Canada

Alan Murphy / Marsh Wren (Cistothorus palustris) calling, British Columbia, Canada

Alan Murphy / Marsh Wren (Cistothorus palustris) calling from cattail, British Columbia, Canada

Alan Murphy / Evening Grosbeak (Coccothraustes vespertina) male, British Columbia, Canada

Alan Murphy / Evening Grosbeak (Coccothraustes vespertina) male, British Columbia, Canada

Alan Murphy / Yellow-headed Blackbird (Xanthocephalus xanthocephalus) female on cattails, British Columbia, Canada

Alan Murphy / Savannah Sparrow (Passerculus sandwichensis), British Columbia, Canada

Alan Murphy / Olive-sided Flycatcher (Contopus cooperi), British Columbia, Canada

Alan Murphy / Northern Flicker (Colaptes auratus) female at nest cavity with chicks, British Columbia, Canada

Alan Murphy / Northern Flicker (Colaptes auratus) male at nest cavity with chicks, British Columbia, Canada

Alan Murphy / Least Flycatcher (Empidonax minimus) calling, British Columbia, Canada

Alan Murphy / Glaucous Gull (Larus hyperboreus) striking at a fish while in flight, British Columbia, Canada

Alan Murphy / Common Loon (Gavia immer) pair on lake at sunset, British Columbia, Canada

Alan Murphy / Common Loon (Gavia immer), British Columbia, Canada

Alan Murphy / Common Loon (Gavia immer) carrying chick, British Columbia, Canada

Juergen Freund / Detail of Giant kelp (Macrocystis pyrifera) gas-filled bladders (pneumatocysts) Vancouver Island, British Columbia, Vancouver Island, Canada.

Kevin Schafer / Oil refinery with Mount Baker behind, seen from Fidalgo Bay, Anacortes, Washington

Kevin Schafer / Oil refinery at sunrise spewing gas effluence out of smoke stacks, Anacortes, Washington

Graeme Guy / Northern Flicker (Colaptes auratus) male at nest cavity, British Columbia, Canada

Bertie Gregory / Humpback whale (Megaptera novaeangliae) adult breaching, Vancouver Island, British Columbia, Canada, July.

Bertie Gregory / Northern sea otter (Enhydra lutris kenyoni) floating amongst bull kelp, Vancouver Island, British Columbia, Canada, July.

David Pattyn / Temperate rainforest scenic with ancient Red cedar tree (Thuja plicata). Pacific Rim National Park, Vancouver Island, British Columbia, Canada, August.

David Pattyn / Western Red Cedar trees (Thuja plicata) in temperate rainforest. Cathedral grove in MacMillan provincial park, Vancouver Island, British Columbia, Canada, August.

David Pattyn / Humpback Whale (Megaptera novaeangliae) tail slapping, tail lob, lobtailing. Vancouver Island, British Columbia, Canada, July.

Loic Poidevin / Female Grizzly bear (Ursus arctos horribilis) in water, Khutzeymateen Grizzly Bear Sanctuary, British Columbia, Canada, June.

Loic Poidevin / Female Grizzly bear (Ursus arctos horribilis) standing up, rear view, Khutzeymateen Grizzly Bear Sanctuary, British Columbia, Canada, June.

Loic Poidevin / Female Grizzly bear (Ursus arctos horribilis) standing up, with two cubs nearby, Khutzeymateen Grizzly Bear Sanctuary, British Columbia, Canada, June.

Loic Poidevin / Grizzly bear (Ursus arctos horribilis) cub peering out from behind its mother, Khutzeymateen Grizzly Bear Sanctuary, British Columbia, Canada, June.

Glenn Bartley / Eared Grebe (Podiceps nigricollis), British Columbia, Canada

Connor Stefanison / Red-necked Grebe (Podiceps grisegena) at nest in swamp, British Columbia, Canada

Connor Stefanison / Barrow's Goldeneye (Bucephala islandica) taking flight, British Columbia, Canada

Cheryl-Samantha Owen / Roosevelt elk (Cervus elaphus roosevelti) in a cut forest. East coast, near Telegraph Cove, Vancouver Island, British Columbia, Canada, July.

Cheryl-Samantha Owen / Western red cedar tree (Thuja plicata) deemed Canada's 'Gnarliest tree' in the old growth forest. Avatar Grove, Vancouver Island, British Columbia, Canada, July.

Cheryl-Samantha Owen / Johnstone strait coastline, East coast, Vancouver Island, British Columbia, Canada, July 2012.

Cheryl-Samantha Owen / Mountains silhouetted in fog, Knight Inlet, East Coast, Vancouver Island, British Columbia, Canada, July.

Eric Baccega / Male Steller sea lion (Eumetopias jubatus) with a group of females hauled out at a rookery, Prince Rupert, British Columbia, Canada, June.

Alex Mustard / Scenic view of a bull kelp forest (Nereocystis luetkeana) with sunlight shining through the fronds. Browning Pass, Port Hardy, Vancouver Island, British Columbia. Canada. North East Pacific Ocean.

Alex Mustard,Alex Mustard / A portrait of a small Candy stripe shrimp (Lebbeus grandimanus) in front of its host pink anemone (out of focus because of the magnification). Browning Wall, Browning Pass, Port Hardy, Vancouver Islan...

Alex Mustard / Three hairy sea spiders (Tanystylum grossifemorum) feeding on red soft coral (Gersemia rubiformis). Browning Pass, Port Hardy, Vancouver Island. British Columbia. Canada. North East Pacific Ocean.

Alex Mustard,Alex Mustard / Red eye medusa (Polyorchis penicillatus) with its feeding tentacles extended to catch planktonic prey. Note that the bell of the jelly has hitchhiking amphipods (Hyperia medusarum). Browning Pass, Van...

Alex Mustard,Alex Mustard / Green surf anemones (Anthopleura xanthogrammica) grow in shallow water below the temperate rain forest. Browning Pass, Port Hardy, Vancouver Island, British Columbia, Canada. North East Pacific Ocean.

Alex Mustard,Alex Mustard / A female (in front) and male Sockeye salmon (Oncorhynchus nerka) over eggs in their spawning river. Adams River, British Columbia, Canada, October.

Alex Mustard / A split level photo of group of Sockeye salmon (Oncorhynchus nerka) fighting their way upstream as they migrate back to the river of their birth to spawn, trees showing autumnal colours. Adams River,...

Eric Baccega / Grizzly bear cub (Ursus arctos horribilis) resting in the sedges, Khutzeymateen Grizzly Bear Sanctuary, British Columbia, Canada, June.

Eric Baccega,Eric Baccega / Female Grizzly bear (Ursus arctos horribilis) standing up in alert and looking around, while feeding on sedge, Khutzeymateen Grizzly Bear Sanctuary, British Columbia, Canada, June.

Eric Baccega / Female grizly bear (Ursus arctos horribilis) crossing water, followed by her two cubs, Khutzeymateen Grizzly Bear Sanctuary, British Columbia, Canada, June.

Eric Baccega / On a misty morning, female Grizzly bear (Ursus arctos horribilis) standing up in alert and looking around with her cubs for danger, while feeding on sedges, Khutzeymateen Grizzly Bear Sanctuary, Briti...

Eric Baccega / Juvenile Grizzly bear swimming in the estuary (Ursus arctos horribilis) Khutzeymateen Grizzly Bear Sanctuary, British Columbia, Canada, June 2013.

Denis-Huot / Killer whales (Orcinus orca) off the coast of British Columbia, North Pacific Ocean

Michel Roggo / Sockeye / Red Salmon (Oncorhynchus nerka) on spawning migration; males surrounding a female. Adams River, British Columbia, Canada, October.

Michel Roggo / Sockeye / Red Salmon (Oncorhynchus nerka) on spawning migration. Adams River, British Columbia, Canada, October.

Michel Roggo / Sockeye / Red Salmon (Oncorhynchus nerka) on spawning migration. Adams River, British Columbia, Canada, October.

Michel Roggo / Sockeye / Red Salmon (Oncorhynchus nerka) on spawning migration. Adams River, British Columbia, Canada, October.

Michel Roggo / Sockeye / Red Salmon (Oncorhynchus nerka) on spawning migration. Adams River, British Columbia, Canada, October.

Kevin Schafer / Larch (Larix sp) trees in autumn below Mount Assiniboine with Sunburst Lake, Mount Assiniboine Provincial Park, British Columbia, Canada

Mark Carwardine / Two Humpback whales (Megaptera novaeangliae) bubble-net feeding very close to shore, Great Bear Rainforest, British Columbia, Canada, Endangered or threatened species (Vulnerable)

Mark Carwardine / Pacific white-sided dolphin / Lag (Lagenorhynchus obliquidens) swimming fast, showing dorsal fin, Johnstone Strait, Vancouver Island, British Columbia, western Canada

Mark Carwardine / Black bear (Ursus americanus) catching salmon, Princess Royal Island, the Great Bear Rainforest, British Columbia, western Canada

Steven Kazlowski / Spirit bear (Ursus americanus) sow with dark cub walking on a log at high tide, along the coastal rainforest of the central British Columbia coast, Canada

Jeff Rotman / Wolf eel (Anarrichthys ocellatus) eating Red Sea Urchin (Strongylocentrotus franciscanus). Queen Charlotte Strait, British Columbia, Canada, North Pacific Ocean.

Jeff Rotman / Wolf eel (Anarrichthys ocellatus) eating Red Sea Urchin (Strongylocentrotus franciscanus). Queen Charlotte Strait, British Columbia, Canada, North Pacific Ocean.

Alex Mustard / The eye of a Pacific giant octopus (Enteroctopus dofleini). Browning Pass, Vancouver Island, British Columbia, Canada

Alex Mustard / Pacific giant octopus (Enteroctopus dofleini) hunts for food on a colourful reef in Browning Pass, Vancouver Island, British Columbia, Canada

Bertie Gregory / Raccoon (Procyon lotor) standing up investigating camera, portrait, Stanley park, Vancouver, British Columbia, Cananda, September.