The star of an Oscar-winning documentary that shows how dolphins are hunted and slaughtered in Japan was deported to the United States after Tokyo airport officials held him for more than two weeks.

Scientists identified a distinct population of Indo-Pacific humpback dolphins in 2002, off the west coast of Taiwan. Locals knew dolphins were there, but were unaware that they were unique to Taiwan, ...

An oil spill on a river in southeast Bangladesh has threatened the breeding ground of the endangered Ganges dolphin, environmentalists said Sunday, describing it as a “major disaster” for the mammal.