Robotic Fish

This file picture taken on October 7, 2005 in London shows a robotic fish swimming around its tank at The London Aquarium. A shoal of robotic fish which can detect pollution in the water are set to released into the sea off Spain, British scientists said Thursday March 19, 2009. The fish, which are some 1.5 metres long and resemble carp, will be fitted with detectors which can identify the sources of pollution, such as ship fuel or chemicals in the water.Photo: AFP