Who is bigger liopleurodon or megalodon?

Megalodon was significantly larger than Liopleurodon. Megalodon, a massive prehistoric shark, could grow up to about 60 feet (18 meters) long, while Liopleurodon, a marine reptile, reached lengths of around 23 feet (7 meters). Thus, in terms of size, Megalodon was the larger of the two.