Shark-on-Shark Attack ‘Unexpected’ Solution To Marine Murder Mystery NewsweekFirst evidence of predation on an adult porbeagle equipped with a pop-off satellite archival tag in the Northwest Atlantic FrontiersA really big shark got gobbled up by another, massive shark in 1st known case of its kind Livescience.comScientists find evidence that pregnant shark was eaten by a bigger shark NBC NewsIt’s a shark eat shark world. Researchers find evidence that large sharks may be hunting each other. CBS News