It's white in front of you! A willow ptarmigan in winter plumage, hidden on a brushy slope near Churchill, Manitoba, Canada.
Having a giraffe: A Giraffe in Transvaal, South Africa. Wolfe's 35-year career has spanned every continent as he has followed his passion for the environment.
Can't see the wolf from the trees: A wolf peering out from behind a tree trunk in an autumn Montana forest.
Eye spy: A spectacled caiman in Llanos, Venezuela. Wolfe works to make it visually challenging to the viewer by using depth of field, scale and placement and confusing the subject.
Cunning tricks: A Great Horned Owl uses colour in its plumage to disappear in a temperate forest in Malheur National Wildlife Refuge in Oregon, left, while an American Pika performs a vanishing act in the Cascade Range of Washington.
Leaf me alone: A Mealy or Blue-crowned parrot disappears like just another leaf in the lush Central American rainforest, Chan Chich, Belize.
'We don't have the isolating abilities that a telephoto lens provides. On most occasions an animal remains somewhat concealed by the clutter of its natural habitat-a necessity of survival for both predator and prey.
'I have basically employed three different photographic approaches and purposely worked to enhance the difficulty to find the camouflaged subject-as difficult as it is in the wild to see animals that do not want to be seen.
Snake eyes: A horned adder matches the colour of the sand in the Namib Desert, Namibia, where they bury themselves using a swimming motion to disappear beneath the hot surface.
Can you spot me? A Leopard conceals herself in vegetation at the base of a tree in Kruger National Park, Transvaal, South Africa.
Rock and hole: A gyrfalcon at their nest built on a cliff, left, and a California Ground Squirrel blends in with its rocky environment,.
Bark and hide: A Great Gray Owl positions itself in front of a similar pattern to take advantage of his camouflage in Oregon, United States.
Art is also a successful book publisher and television producer. He has published at least one book a year since 1989.
The 61-year-old from Seattle said: 'It is in the wild places, where the edge of the earth meets the corners of the sky, the human spirit is fed.'
Invisible: A male Spotted Deer disappears among sun-dappled vegetation in Ranthambore National Park, Rajasthan, India.
Stop monkeying around: A family of Japanese Macaques disappear amid their rocky habitat on Honshu Island, Japan.
I'm white over here! White-tailed Ptarmigan in Churchill, Manitoba, Canada.
The long grass: An Impala hiding in vegetation in Botswana's Chobe National Park, Africa.
A sandy place to hide: A cheetah cub disguised against the Kalahari Desert, South Africa.
Water good place to hide: A Common Snipe, well hidden in the shoreline vegetation of a Minnesota stream.
Out of sight hawk: A nighthawk resting on rocks where it blends into its surroundings in eastern Washington.
Snow way I'll be spotted here: A coyote camouflaged in the surrounding brush at the edge of a snow dusted field, Washington State, USA.
Precarious perch: Two Klipspringers camouflaged against a rocky outcrop in Chobe, Botswana.
Branching out: A well-concealed blue dacnis takes a rest in foliage in Panama.