“Livyatan was a massive raptorial whale with the largest functional teeth ever known, some measuring over a foot long.”
Interestingly, the Livyatan’s huge teeth may not have been used for the kind predatorial hunting that we might assume from a creature with foot-long teeth. It’s speculated that the beast would head-butt its prey and then use its teeth to finish the job. But like its more modern relative, the sperm whale, the livyatan appears to have organs specifically designed to enable deep-sea hunting.
Read more about this massive prehistoric whale and the Megalodon here: https://owlcation.com/stem/Livyatan-Melvillei-vs-Megalodon-Real-Prehistoric-Sea-Monsters