Scientists report cape fur seals have been attacking and killing blue sharks . The unusual behaviour was spotted by divers off the coast of Cape Town . The seals themselves are usually hunted and killed by great white sharks . Blue sharks are about the same size as fur seals but mainly eat smaller fish . The seals were seen to pounce on the sharks and then eat only their guts . This is thought to be the most energy dense part of the shark for the seal .
Scientists report cape fur seals have been attacking and killing blue sharks . The unusual behaviour was spotted by divers off the coast of South Africa . The seals themselves are usually hunted and killed by great white sharks . Blue sharks are about the same size as fur seals but mainly eat smaller fish . The seals were seen to pounce on the sharks and then eat only their guts . This is thought to be the most energy dense part of the shark for the seal .