Southern right whales: Tracking unexpected Southern Ocean migrations

New Zealand's southern right whales were almost hunted to extinction a century ago.

Their recovery now depends on the health of the oceans - but where exactly do they feed?

The answer has surprised scientists and provided hope for the species amid climate change.

Video by Isabelle Rodd. Footage credited to the ​​University of Auckland Right Whale Research Team was captured with a New Zealand Department of Conservation permit.