Science and engineering fair crowns winners thegardenisland.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from thegardenisland.com Daily Mail and Mail on Sunday newspapers.
Seafood farm operators are breeding and deploying sea cucumbers to vacuum up the massive amounts of fish waste that pose a major problem for their industry. It is part of an effort to redesign fish farms with multiple species so that they work more like natural ecosystems.