Ancient Pacific Seas Ruled by Enormous Blue Dragon Mosasaur

Researchers have discovered the fossil of a giant mosasaur, named Wakayama Soryu or "Blue Dragon," that roamed the Pacific seas 72 million years ago. The nearly complete skeleton, found in Japan's Wakayama Prefecture, is the most extensive mosasaur specimen ever found in the region. The apex predator had unique features, including a crocodile-like head, enormous paddle-shaped flippers, and a dorsal fin similar to a great white shark. Its large front and rear fins suggest different functions, challenging our understanding of how mosasaurs swam.