PHOTOGRAPH BY SOPHIE BOLESWORTH
Deep in the arctic winter off Norway, a boat searches the icy ocean for sperm whales
The world’s largest toothed predator is well studied in the tropics, but close encounters in the high latitudes remain rare. On stormy northern seas, these hardy researchers not only want to find them – they want to dive with them.
PUBLISHED 11 MAY 2021, 17:24 BST