1Exhausted from his swim, the bear must regain his strength.
2The next day, a sea fog shrouds the island.
3The walruses sense that they're in danger.
4Using the fog as cover, the bear approaches the herd.
5The adults close ranks around their young, presenting a wall of blubber and hide.
6He tests the barrier, but it stands firm.
7It appears that the world's largest land carnivore has met his match.
8There must be a chink in the armour somewhere.
9Not here!
10This female walrus is shielding her pup.
11If he can just prise her off...
12The bear's claws and teeth can't penetrate her thick hide.
13With the herd retreating to water, the bear must move quickly.
14Having failed with one, he heads straight for another.
15The chance of his first meal in months is slipping away.
16He seems increasingly desperate.
17It's now or never.
18He must avoid the stabbing tusks if he is to win.
19The flailing walrus is immensely powerful and drags the bear away from the shallows towards the safety of the herd.
20It slips from his grasp.