Why Do Killer Whales Eat Shark Livers
Killer whales eat shark livers because they are extremely energy dense and rich in fats and oils. This makes the liver a high calorie food source that helps orcas meet their large energy needs, especially in cold waters.
Which Sharks Are Targeted
Orcas are known to bite out the livers of species such as blue sharks, soupfin sharks, and other pelagic sharks. The liver can make up a large portion of the shark’s body weight and is relatively easy to access once the shark is subdued.
How Orcas Catch and Eat Sharks
Killer whales use coordinated hunting techniques to flip sharks into tonic immobility, a state of temporary paralysis. This allows orcas to safely extract the liver. The behavior has been documented in multiple ocean basins and is considered a specialized feeding strategy.
Research on orca predation on sharks shows that targeting large, fatty organs like the liver is a deliberate and efficient way to obtain nutrients. Studies of stomach contents and observed hunts support this explanation.
