Researchers notice whales’ unusual feeding behaviour in south-east Alaska
Humpback whales have been captured on film herding shoals of fish into their cavernous mouths with their oversized pectoral fins.
Marine biologists recorded the extraordinary feeding behaviour for the first time off the coast of Alaska, where the whales lurk around salmon hatcheries that release juvenile fish into the sea.
Read More Humpback whales recorded using huge fins to forage