An American black bear climbs quickly up a tree and rests on a branch.

A silverback mountain gorilla starts to climb a tree in the Virunga National Park, Democratic Republic of Congo.

An Eastern chimpanzee baby dangling from a tree by its arm as it chews a small branch.

An active Woolly monkey climbs from branch to branch on a tree.

A silverback mountain gorilla looks around the surrounding dense vegetation in the Virunga National Park, Democratic Republic of Congo.

A silverback mountain gorilla in the Virunga National Park, Democratic Republic of Congo, peers around the dense vegetation in which it stands.

A silverback mountain gorilla sitting in dense vegetation in the Virunga National Park, Democratic Republic of Congo. Flies fly around its head.

Underwater shot of a Southern Right Whale swimming in the ocean towards an underwater photographer who takes photos of the whale. The cameraman looks tiny as the whale swims to be on his side.

Close up view of a hawk as it turns its face in front of the camera. The hawk looks very alert.

An American black bear cub sits on the forest floor, chewing a long branch. It then falls backwards onto its mother. When the mother bear tries to nurture her cub, the cub starts to play fight.

A restless American black bear cub sits on the forest floor, playing with a long branch.

A Woolly monkey hides behind a thick branch, looking around suspiciously. It then moves onto a nearby branch, with its baby hanging from its back.

Underwater shot of a common seal lounging in a rock crevice. It curiously sniffs the camera and swims away.

A silverback mountain gorilla hides behind a thick layer of plants in the Virunga National Park, Democratic Republic of Congo.

A Woolly monkey sits on thick branch, looking down, then crawls along the branch.

A silverback mountain gorilla in the Virunga National Park, Democratic Republic of Congo, picks at leaves and vines and chews them while lying down.

Solo Seal hangs motionless in the sea, looks at the camera in a pensive manner, then swims out of view.

A silverback mountain gorilla in the Virunga National Park, Democratic Republic of Congo, sits in dense vegetation, scratching its face. It then gets up and wanders off.

A silverback mountain gorilla in the Virunga National Park, Democratic Republic of Congo, looks curiously into the camera then hides behind the dense vegetation surrounding it.

An American black bear explores the forest.

An active Woolly monkey climbs along a thick tree branch and jumps across to another branch.

A Woolly monkey climbs onto a thick branch. Its baby is clinging onto it. The monkey moves along the branch.

A common seal swims from behind swaying kelp and peers into the camera lens before swimming away to a rock crevice.

A close up view of a Silverback Mountain Gorilla staring straight into the camera with a very determined look in its eyes.

An American black bear cub plays against a tree then wanders off to join another cub and the mother bear.

A Woolly monkey plays with the baby of another monkey. The baby is clinging onto its mother. The mother then wanders off with its baby.

A restless American black bear cub sits on the forest floor, chewing a long branch, then sticking out its long tongue.

A Woolly monkey scratches its leg. When it turns around, its baby is seen clinging onto its back. The monkey then crawls away with its baby attached to its back.

A silverback mountain gorilla hides behind a thick layer of plants and picks at leaves in the Virunga National Park, Democratic Republic of Congo.

A common seal swims around the camera and curiously peering into the camera lens.

A silverback mountain gorilla in the Virunga National Park, Democratic Republic of Congo, sits among dense vegetation and looks into the camera curiously.

Close up shot of a hawk turning its head in front of the camera.

Heligoland, Germany: A grey seal rolling on the sand by another seal. It then moves towards the camera.

A family of Meerkats on top of a log looking around.

A silverback mountain gorilla tugs at twigs and leaves in the Virunga National Park, Democratic Republic of Congo.

An American black bear cub sits calmly on the forest floor. Another bear behind it looks around the forest.

A common seal swimming by sea bed and curiously circling the camera before swimming away.

A Woolly monkey crawls along a branch. Its baby is clinging onto its side. The monkey sits down on the branch for a moment, then gets up to continue moving along the branch.

Two adult Woolly monkeys sit on a thick branch. One of the Woolly monkeys plays with the baby of the other monkey. The baby is clinging onto its mother.

A close up view of a Silverback Mountain Gorilla posing and looking straight into the camera curiously.

A silverback mountain gorilla lying in dense vegetation in the Virunga National Park, Democratic Republic of Congo.

A point of view shot of camera going through jungle to find a Silverback Mountain Gorilla lounging amid the bushes. The gorilla looks at the camera curiously.

A silverback mountain gorilla in the Virunga National Park, Democratic Republic of Congo, looks into the camera curiously.

Two silverback mountain gorillas are initially in shot. The gorilla in the foreground sits in dense vegetation in the Virunga National Park, Democratic Republic of Congo, picking at leaves. It then wanders off to hide behind a thick layer of plants.