[00:03.080]from the relentless battering of the southern ocean
[00:13.990]In the depths something stirs
[00:14.080]Humpback whales
[00:16.400]They have travelled over 5,000 miles to reach these waters
[00:22.100]The whales are harvesting krill
[00:25.120]shrimp-like creatures
[00:26.440]that begin to swarm here as soon as the ice retreats
[00:33.110]Diving into the heart of the swarm
[00:33.260]teams of whales spiral round each other in close coordination
[00:41.490]Now they turn
[00:43.240]blasting air from their blowholes
[00:45.680]and ascend towards their prey
[00:48.440]The krill becomes concentrated
[00:52.170]as the spiralling net of bubbles draws inwards
[00:56.240]The team of whales work round the clock
[00:59.390]for the boom is short lived
[01:02.080]Summer is already fading
[01:03.780]and the whales will soon be forced north as winter returns

from the relentless battering of the southern ocean
In the depths something stirs
Humpback whales
They have travelled over 5,000 miles to reach these waters
The whales are harvesting krill
shrimp-like creatures
that begin to swarm here as soon as the ice retreats
Diving into the heart of the swarm
teams of whales spiral round each other in close coordination
Now they turn
blasting air from their blowholes
and ascend towards their prey
The krill becomes concentrated
as the spiralling net of bubbles draws inwards
The team of whales work round the clock
for the boom is short lived
Summer is already fading
and the whales will soon be forced north as winter returns