![]() ![]() The liver accounts for 5 to 10 percent of the weight of a shark, which is extremely high compared to humans and other animals." "Sharks have large livers with lots of oil, which helps maintain buoyancy because sharks do not have swim bladders like most fish. "It is therefore a great food for killer whales that have a high cost of living and need high caloric food to maintain their energetically expensive lifestyle. "The reason that killer whales would target the liver of sharks is that it is full of oil and is therefore full of calories, in addition to being big and high in vitamins," Trites said. Russia Navy blasts may have killed a dozen of world's deepest diving whales.Dozens of orcas attack and devour beaked whale in ocean bloodbath. ![]() Mystery giant "jellyfish" turns out to be grisly beach discovery.
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