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.
Sea of Hyūga The Hyuga-nada Sea (日向灘 , Hyūga-nada ) is the part of the Pacific Ocean that lies off the eastern shore of the island of Kyushu, to the south-west of the island of Honshu, off the south coast of Japan. Its name is derived from the former province of Hyūga, which corresponded to the prefecture of Miyazaki before the Meiji Restoration.