Megalodon body temperature ‘was about 7C warmer than surrounding water’

Megalodons are believed to have grown to lengths of 50 feet (Alex Boersma/PNAS/PA)

The megalodon could maintain a body temperature that was about 7C warmer than the surrounding water, new research suggests.

Based on analysis of tooth enamel from the ancient shark, the findings might help explain why it went extinct 3.6 million years ago.