Meet the 19-meter Cretaceous kraken that swam with mosasaurs

A new study challenges the long-held belief that Cretaceous oceans were dominated solely by vertebrate predators like mosasaurs and sharks. Researchers discovered fossilized remains of giant, finned octopuses up to 19 meters long, suggesting they were apex predators with hardened beaks and high intelligence, altering the understanding of marine ecosystems 80 million years ago.