A sperm whale’s tooth can weigh more than two pounds and they are illegally trafficked to be used as decorations and for ...

New Zealand scientists have begun dissecting a spade-toothed whale, considered the rarest whale in the world, marking the first time researchers have been able to study a complete specimen.

Two studies reveal that the communication systems of most cetaceans examined adhere to the principles of efficiency and ...

New research finds some baleen whale species call at such deep frequencies that they're completely undetectable by killer whales, which cannot hear sounds below 100 hertz. These also tend to be the ...

Deep in the Pacific, humans have tracked a mysterious whale’s call for decades—but no other whale seems to respond. And now, we might be running out of time to find the source.

A sperm whale stranded on Cuttyhunk Island over the weekend, adding to alarming whale death toll since December. Here's what ...

In Campbell Fraser’s immersive art installation, three sculpted sperm whales (the largest of the toothed whales), hang from ...

During a typical excursion, guests can spot common, bottlenose and rough-toothed dolphins surging through the surf, while smaller cetacean species span from the false killer whale—a social ...

More solitary than toothed whales, baleen whales face predatory attacks from killer whales, especially mother and calf pairs. When attacked, some species fight back, while others choose flight.

Killer whales are the only natural predator of baleen whales — those that have “baleen” in their mouths to sieve their plankton diet from the water. More solitary than toothed whales, baleen ...