Researchers examining 20 years of data on orca sightings have discovered a worrying trend linked to the receding ice, ...

A group of 20 tagged killer whales traveling at fairly rapid speed is followed as they head straight toward the summer nursery grounds of a pod of narwhal and their young. The science team and ...

Sifting through more than four decades of data on two killer whale populations in the northwest Pacific, an international team of scientists says they’ve discovered why killer whales go through ...

Whale sharks are gentle, filter-feeding giants, but orcas in Mexican waters were documented attacking the animals and devouring their livers.

A killer whale mom, who shot to fame after she carried her dead calf’s corpse with her for more than two weeks in a harrowing tale of grief, has lost another baby, scientists revealed. The orca ...

The "super rare" killer whale has either leucism or Chediak-Higashi Syndrome, causing a rare white color that differs from the species' usual black and white.

Granny, the world's oldest known orca, has been spotted again. At 103-years-old, she is the matriarch of a killer whale community known as the "J-Pod." Granny was seen earlier this week leading ...

Dave Phillips, a scientist that helped to rewild Keiko, the orca who starred in "Free Willy," is working to help two other killer whales, Wikie and Keijo, move from a closed marine park to a sea ...

New study finds ship collisions are top killer for whales Conservation helped stop most whale hunting. Now shipping kills them and little is done to avoid collision risk ...

Boaters near San Diego spotted a group of Eastern Tropical Pacific Killer Whales blitz a bottlenose dolphin pod before attacking an adult.

Darren Croft on killer whale matriarchs and the menopause Jim-Al Khalilii talks to biologist Darren Croft about his studies of killer whale family life.