Over the last 50 years, the number of chinstraps here has dropped by half.
Antarctica is losing the very element that defines it. Ice.
That is now diminishing six times faster than it once did.
Neumayer glacier on South Georgia has lost nearly six miles of ice in just 20 years.
Parts of Antarctica are warming faster than anywhere else in the southern hemisphere.
And that is having a serious effect on the animals that live on its coast, such as the weddell seal.
With less sea ice available, many are now hauling out onland.
That's not just a problem for them... but also for the predators that specialise in hunting them.
One particular group of antarctic killer whales, 100 or so animals strong.
Killer whales are among the most intelligent of all nonhuman predators.
And they're now working out how to tackle prey that isn't a weddell seal.
An adélie penguin, resting on the ice.
A mere snack for an adult killer whale.
But it gives this group of six-year-olds a chance to practise one of their particularly ingenious hunting techniques. Wave-washing.
A skill that takes at least 15 years to perfect.
First, the killer whales assess the size and position of a possible victim.
They must then calculate the speed needed... For an attack.
But they're too late.
Even though a co-ordinated flick of their tails creates a reasonable wave... it's nothing without precision timing.