Thirty years ago, scientists and conservationists believed whales were on the path to recovery: cutting-edge satellite tagging, acoustic monitoring, and global marine protection guaranteed survival.

Fog clings to the Golden Gate, swallowing the booming horns of cargo ships as they attempt to warn other vessels of their presence. Onboard a small research vessel nearby, underwater microphones ...

In the waters off New England, one of Earth's rarest mammals swims slowly, mouth agape. The North Atlantic right whale filters clouds of tiny reddish zooplankton—called Calanus finmarchicus—from the ...