A seal pup on St. Paul Island
Pup counts of northern fur seals on St. Paul Island in the Bering Sea have been crashing, and one knows why.
Certain types of killer whale — those silent, secretive marine-mammal eaters known as “transients” — have been prowling off shore. But what are they doing?
Could they be scarfing down seals when no one’s looking? How do you spy on predators and prey hidden within the green-dark Bering Sea?
You eavesdrop.