Pregnant porbeagle shark eaten by larger shark, indicating potential predator-on-predator behavior.

A study in Frontiers in Marine Science reveals the first documented case of a pregnant porbeagle shark being eaten by a larger shark, likely a great white or shortfin mako. This finding, led by Arizona State University researchers, suggests that predator-on-predator behavior may be more common than previously thought. Porbeagle sharks are listed as "vulnerable" by the IUCN, and their North Atlantic population is critically endangered due to overfishing, raising concerns about their declining numbers.