Killer whales eating white sharks in Mossel Bay, South Africa

Great white sharks (Carcharadon carcharias) are apex predators in the ocean; they can grow up to 20 feet long, weigh up to 5,000 pounds, and have several rows of hundreds of pointy, serrated teeth—perfect for slicing into and tearing apart prey.

Towner told Gizmodo in June that orcas probably target great white livers because the organs are rich in nutrients and can account for up to one-third of the sharks’ body weight.

Previous research indicated that the great whites stopped visiting their ordinary haunts once the orcas set up shop. In their absence, bronze whaler sharks—ordinarily prey for the larger great whites—moved in, though orcas also prey on them.


No shark carcasses washed ashore from the filmed attacks, though those desiccated remains were previously the main reason biologists suspected orca predation.

A white shark leaps out of the water.
White sharks like this one—typically the top of their local food chain—are becoming part of the menu.
Photo: CARL DE SOUZA/AFP (Getty Images)

In one compelling moment of the footage, two orcas are swimming near a great white when a third comes up from the depths, pushing the shark to the surface. One of the other orcas then bites into the fish, and a cloud of blood fills the water.

A piece of shark liver—about the size of an orca’s head—is seen floating on the surface, before being consumed by Starboard (recognizable for his collapsed dorsal fin). The researchers believe the orca attack tactic may be a means of opening up the sharks to get at their livers.


Around the same time on the same day, a helicopter pilot witnessed two white sharks being killed by killer whales. Due to the timing, the team suspects the same group of orcas was responsible.

The team believes that cultural transmission (adult-to-adult learning) may be happening here. In other words, an orca like Starboard—clearly well-versed in killing great white sharks—may be teaching others how to take down the apex predators.


The footage affirms what was long suspected: White sharks in the area are running—er, swimming—scared. The greater population trends that could stem from the orca’s behavior are unclear, but if the hungry, hungry cetaceans keep at it, the knock-on effects will soon be apparent.

More: Horrific Observations Confirm That Orcas Feed on Blue Whales