If you happen to be in the area of the Spanish port of Gijon in the near future and you notice some awkward fish in the water, don't be alarmed. What you're seeing might be robotic creatures that are designed to test the water for pollutants, reducing the amount of time it takes to survey large bodies of water from weeks to just seconds. British consultancy group BMT Group, which is at the helm of the project, hopes to sell the fish to local port authorities.
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