Asia has the longest coastline of any continent and the richest coral reefs on earth. Its seas are connected by some of the world's most powerful currents and are home to over 60 per cent of all marine species.

This groundbreaking film features the charismatic creatures of Asia's oceans, never-seen-before spectacles and brand new animal behaviour. From ocean giants in the big blue to tiny fish that climb trees, squid that glow in the dark and grey reef sharks in their hundreds, Asia's waters are as spectacular as they are diverse.

In northern Asia, life defies hostile extremes. In Russia's Lake Baikal, a seal pup must take evasive action when its ice den starts to melt. Hokkaido's thermal springs are a haven for dancing red-crowned cranes. On the Tibetan Plateau, a lone Himalayan wolf hunts antelope. Fish owls thrive in the forests where Russia and China meet. On the Kamchatka Peninsula, brown bears hunt salmon to prepare for hibernation. Elsewhere in Japan, bats hibernate beneath snow, while red foxes and sea eagles compete for food. In Arctic Russia, polar bears wait on isolated lands for the return of sea ice.