6 Lost Worlds Under the Sea: Which Was the Biggest? #history

20,000 years ago you could have walked from Britain to Denmark, from Siberia to Alaska, and from the Malay Peninsula to Borneo without getting your feet wet. At the peak of the last ice age, so much water was locked up in ice that the sea was about 120 metres lower than today. Then the ice melted and the sea took those lands back.

In this documentary we visit six lost worlds on a real relief map, watching the sea level fall and rise over seafloor data: Doggerland, Sundaland, Beringia, the Persian Gulf, Sahul and the Black Sea. And one question to keep in mind: which of the six was the biggest?