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Robotic Fish Shoal Sniffs Out Pollution in Harbours

from New Scientist

There is something unnatural lurking in the waters of the port of Gijon, Spain, and researchers are tracking its every move. It is not some bizarre new form of marine life, but an autonomous robotic fish designed to sense marine pollution, taking to the open waves for the first time.

"With these fish we can find exactly what is causing the pollution and put a stop to it right away," explains Luke Speller, a scientist at the British technology firm BMT and the leader of SHOAL, a European project involving universities, businesses and the port of Gijon, which have joined forces to create the fish.

Currently the port relies on divers to monitor water quality, which is a lengthy process costing €100,000 per year. The divers take water samples from hundreds of points in the port, then send them off for analysis, with the results taking weeks to return. By contrast, the SHOAL robots would continuously monitor the water, letting the port respond immediately to the causes of pollution, such as a leaking boat or industrial spillage, and work to mitigate its effects.

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