The underwater call of the sperm whale, the earth’s loudest ... to hunt their food with sound rather than sight. They eat squid, octopus, fish, prawns, crustaceans and other marine mammals ...

After that, the killer whale seemed to be eating the most prized part - the liver. PANCALDI: Sharks in general, they don't have a lot of fat. The only fatty part in the body of a shark is the liver.