Its appetite hinges on nutrient-rich krill swarms, so climate shifts that shrink krill threaten energy reserves and migration. Read on to discover the 12-inch-thick throat muscles and a 90-second gulp ...

A colossal 60-foot whale shark, nearly the size of a city bus, has been spotted off the Pacific coast, stunning marine biologists. This gentle giant, a filter feeder vital for ocean health, dwarfs the ...

A critically endangered species of whale is getting smaller and smaller thanks to climate change. These shrinking giants are North Atlantic right whales, of which there are only an estimated 356 ...

A new long-term study looking at the elusive Cuvier's beaked whale reveals the deepest and longest dives ever seen among mammals. The new records indicate behavior that is much more varied and extreme ...