Scientists find evidence that pregnant shark was eaten by a bigger shark NBC NewsFirst 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.comIt’s a shark eat shark world. Researchers find evidence that large sharks may be hunting each other. CBS NewsShark-on-Shark Attack ‘Unexpected’ Solution To Marine Murder Mystery Newsweek