Humpback whale numbers fall 20% but scientists aren't worried yet
A sprawling international study of humpback whales in the northern Pacific has found their population has shrunk significantly since 2012 — despite the once-endangered species' remarkable comeback from the brink of extinction.
A sprawling international study of humpback whales in the northern Pacific has found their population has shrunk significantly since 2012 — despite the once-endangered species' remarkable comeback from the brink of extinction.
