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In this artist photo provided by Robots in Service of the Environment shows, taken April 18, 2017, the first day a new robot was used to hunt dangerous and invasive lionfish in Bermuda. It stuns lionfish with an electric current and then the fish is vacuumed into a container alive and it can later be sold for food. The robot caught 15 lionfish in 48 hours of initial testing. New, creative but more high-tech methods may finally be turning the tide in the fight against invasive species. Non-native plants and animals cost the world hundreds of billions of dollars a year. (Dr. Philippe Rouja/Robots in Service of the Environment via AP)

In this artist photo provided by Robots in Service of the Environment shows, taken April 18, 2017, the first day a new robot was used to hunt dangerous and invasive lionfish in Bermuda. It stuns lionfish with an electric current and then the fish is vacuumed into a container alive and it can later be sold for food. The robot caught 15 lionfish in 48 hours of initial testing. New, creative but more high-tech methods may finally be turning the tide in the fight against invasive species. Non-native plants and animals cost the world hundreds of billions of dollars a year. (Dr. Philippe Rouja/Robots in Service of the Environment via AP)

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