Some of the comments under the article have suggested this is far from a new discovery, whether it is or isn't it's still interesting nonetheless
http://www.dailymail.co.uk/sciencet...ists-worlds-sixth-largest-river--the-sea.html
The river, shown with a 3D scan using false colour, flows along the bed of the Black Sea
The river - with 350 times the flow of the Thames - has channels, rapids and waterfalls
The seabed river flows from Turkey's Bosporus
http://www.dailymail.co.uk/sciencet...ists-worlds-sixth-largest-river--the-sea.html

The river, shown with a 3D scan using false colour, flows along the bed of the Black Sea

The river - with 350 times the flow of the Thames - has channels, rapids and waterfalls

The seabed river flows from Turkey's Bosporus