The thread on Atlantis brought to mind the discovery of Doggerland. A land mass from 18 thousand to – 5500 years ago that connected England to France and Scotland to Denmark and Belgium. A landmass that was exploited by hunter gatherers. From the early 1900’s fishing vessels have dragged up mammoth and lion remains as well as small number of prehistoric tools and weapons. University research has found evidence of a surprisingly advanced late Mesolithic fishing culture, including finely decorated canoe paddles and several long, thin canoes, one of them over 30 feet long. Another showed how diet changes from fresh water to marine animals. As the planet warmed the sea levels rose. Around 7 thousand years ago a “melt down of frigid water called the Storregga Slide triggered a tsunami flooding the northern coast of Europe. Then at 6 thousand years people on boats arrived on the British Isles with cattle goats farming technology. I was unable to find any information on animal migration patterns concerning Doggerland as a land bridge.