Zoom through a 'spectacular' chain of ancient underwater volcanoes on Antarctic ocean floor 

 A research expedition in the Southern Ocean has mapped a string of seamounts that help to shape an ocean current that flows clockwise around Antarctica. 

https://cdn.mos.cms.futurecdn.net/w3SrYG9sjZpDW7UgdVYhWg.jpg

https://www.space.com/antarctic-volcanoes-underwater-chain-ocean-floor