There are a fair few potential 'megatsunamis' waiting out there. The Canary Islands one could be particularly devastating since theoretically half the island o

There are a fair few potential 'megatsunamis' waiting out there. The Canary Islands one could be particularly devastating since theoretically half the island on La Palma could slide into the sea. http://en.m.wikipedia.org/wiki/Megatsunami http://en.m.wikipedia.org/wiki/Megatsunami