Humpback whales travel thousands of miles to feed in rich, icy Antarctic waters. Scientists who are following the whales reveal how that food supply could be affected by climate change.

Humpback whales travel thousands of miles to feed in rich, icy Antarctic waters. Scientists who are following the whales reveal how that food supply could be affected by climate change.

Humpback whales travel thousands of miles to feed in rich, icy Antarctic waters. Scientists who are following the whales reveal how that food supply could be affected by climate change.

Humpback whales travel thousands of miles to feed in rich, icy Antarctic waters. Scientists who are following the whales reveal how that food supply could be affected by climate change.

Humpback whales travel thousands of miles to feed in rich, icy Antarctic waters. Scientists who are following the whales reveal how that food supply could be affected by climate change.