> I've never heard of underwater landslides Good heavens. You do surprise me. There have been some vast ones, e.g. https://en.wikipedia.org/wiki/Storegga_Slid

> I've never heard of underwater landslides Good heavens. You do surprise me. There have been some vast ones, e.g. https://en.wikipedia.org/wiki/Storegga_Slide https://en.wikipedia.org/wiki/Storegga_Slide Some have the potential to massively affect human life well above sea level, e.g. La Palma in the Canary Islands, which when it goes will inundate much of the east coast of the USA: https://www.e-education.psu.edu/earth107/node/1609 https://www.e-education.psu.edu/earth107/node/1609 The video from that is sensationalist but makes some good points: https://www.youtube.com/watch?v=6utAunBKXV4 https://www.youtube.com/watch?v=6utAunBKXV4