
A brown bear wades in Kurile Lake, Kamchatka. It is hunting for sockeye salmon during the great salmon run.

A male brown bear spotted in Kamchatka. They spend the summer searching for females to mate with, but can be a dangerous threat to new cubs.

A close-up of a brown bear. These animals have an excellent sense of smell and are able to detect the scent of a carcass from more than 3 kilometers.

Two BrĂ¼nnich's guillemots defend their nest from a hungry Arctic fox. The Artic fox’s summer coat allows it to hide amongst the rocks.

The Arctic fox's summer coat helps it blend in with the rocky Russian Arctic coastline. It will grow fluffy white fur in time for winter.

An Atlantic walrus rests on the beach. These animals spend a third of their lives hauled out on the shore, huddled together for warmth.

An Atlantic walrus lounges on the shore. Walruses can weigh up to 1.5 tonnes and have 25 centimeters of blubber.

BrĂ¼nnich's guillemots nesting on steep rock faces. Here it is too difficult for most predators to reach their precious eggs.

A sperm whale carcass has washed ashore on the Russian Arctic coast. It will provide a welcome meal to many hungry animals.

A polar bear hunts for seals. The melted, fractured ice sheets make it harder for it to find the next meal.