Tsunami waves caused by a massive underwater landslide 200 miles off the coast of Cornwall, reached Britain.
According to the newspaper Express, a landslide caused a wave length of 150 feet. Eyewitnesses say that the shock wave in front of the sea was calm, but the water suddenly went to the beach for more than 450 meters.
The phenomenon can be observed from Penzance to Portsmouth, on the strip length of 250 miles.
Here you can watch it.