Doggerland was submerged by a tsunami formed in what ocean?
Storegga Slide The three Storegga Slides are considered to be amongst the largest known landslides. They occurred under water, at the edge of Norway's continental shelf in the Norwegian Sea, approximately 6225–6170 BCE. The collapse involved an estimated 290 km length of coastal shelf, with a total volume of 3500 km3 of debris, which caused a very large tsunami in the North Atlantic Ocean.
Eemmeer The Eemmeer (] ) is a lake situated in the middle of the Netherlands between the provinces of Flevoland, Utrecht, and North Holland. It measures 13.4 km2 and contains one small island, the Dode Hond ("Dead Dog"). The Eemmeer is one in a series of peripheral lakes used to geohydrologically detach the low-lying polders of Flevoland from higher old mainland. The Eemmeer is connected to the peripheral lakes Gooimeer in the west, at the point where both lakes are crossed by the highway A27 bridge, and the Nijkerkernauw in the east.