The stunning video coincides with what scientists believe is the first time a single orca was captured on camera killing a great white shark.

Shark Week's Great White Assassins settles the debate between Jaws and Orca: The Killer Whale about who is the dominant sea predator.

Orca sightings are very rare in these parts, and researchers urge anyone who sees an orca to report it. Killer whales have been seen attacking great white sharks off South Africa in recent years.

The Atlantic White Shark Conservancy confirmed it was a sighting of Old Thom, the only orca regularly seen in North Atlantic ...

The legendary killer whale known as “Old Thom” is back. A group on a tuna fishing expedition off Massachusetts over the weekend spotted the well-known orca — leading to plenty of excitement ...