Cetaceans

Authorities have warned members of the public not to eat the whale meat due to health concerns.

The military operations underway during the Russia-Ukraine war seems to be disrupting dolphins sonars, causing them to wash up dead.

"Dolphins and porpoises washed ashore during our investigation exhibited fresh war-related injuries on their bodies," said researcher Ewa Węgrzyn.

The whale is thought to be around 1,000 years old and could have measured more than 65 feet in length—but researchers are not sure exactly what it is.

Ancient and medieval peoples may have seen a strange whale behavior that has only recently been documented by scientists, the author of a study told Newsweek.

Scientists say a necropsy for the fourth whale to wash ashore in Oregon in recent weeks is "nearly impossible," making its cause of death a mystery.

"We first became concerned when we realized the width of the tail was more than the width of our [16-foot] boat," Tamanui Uerata said.

"The specimens in this subspecies are one of the smallest common bottlenose dolphins found," marine researcher Ana Costa said.

Australian fisherman Trapman Bermagui, who filmed the encounter, said he could hear the attack from over 300 feet away.

Harbor porpoises usually live in the saltwater of the ocean and being in freshwater rivers for too long can be bad for their skin.

The killer whale, Kiska, has been held in captivity for more than four decades, during which time she has had five children, all of whom died.

The footage was captured by Captain Josh Trosvig of the cod fishing vessel Cerulean off the coast of Unimak Island in Alaska.

Photos and videos of nearly 1,500 dolphins being slaughtered were condemned across social media.

The whales are currently acclimatizing in a care facility at a first-of-its kind sea sanctuary before their eventual release.

"This type of feeding is very risky, as dolphins run the risk of remaining stranded," said researcher Daniele Cagnazzi.

The whales were observed in the Northeast Canyons and Seamounts Marine National Monument, located around 130 miles east-southeast of Cape Cod, Massachusetts.

For centuries, ambergris has been highly prized for its unique for its use a perfume ingredient.

The fatal wound, located above the right eye, measured around 6 inches in length and penetrated through to the top of the skull.

Researchers investigated a unique group of dolphins in Western Australia which use sponges as tools to forage for food.

Peregocetus pacificus was unearthed in marine sediments on the coast of Peru.

Basilosaurus isis roamed the oceans between 38 and 34 million years ago.

Killer whales live in highly complex societies, much like humans.

Below the surface, the oceans are not as quiet as you might think.

In most animals, stress and exercise increase heart rates.

Dolphins are helping science understand the connection between brain size and culture.