Summary:
- Satellite images have revealed evidence of massive tsunamis that occurred thousands of years ago, some of which lasted for up to 9 days.
- These ancient mega-tsunamis were caused by massive underwater landslides and were much larger than any tsunamis observed in modern times.
- The study of these ancient mega-tsunamis provides important insights into the potential risks and impacts of such catastrophic events, which could help scientists better prepare for and mitigate the effects of future tsunamis.