About This Video
This video is
Marine scientists filming in one of the world's deepest ocean trenches have found groups of highly sociable fish swarming nearly five miles (7700 metres) beneath the surface.
This website uses Adobe® Flash™ Player 9
Download Flash Now
If you are using Internet Explorer, you will need to restart your browser
after installing Flash.
Adobe and Flash are registered trademarks of Adobe Systems incorporated.
All rights reserved.
