Independent: "Killer Shrimp" are among the worst alien invaders of Britain's waterways, which officials say are costing billions of pounds to tackle.
As well as introduced animals, several species of pond plants which have escaped from gardens and parks are also on the list of non-native flora and fauna posing a threat to the country's rivers and lakes.
According to the Environment Agency, the intruders cost the UK economy about £1.7bn a year, damaging riverbanks and buildings, increasing flood risk and......
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Killer shrimp top UK waterways’ least-wanted list
Posted by Washington Post: Juliet Eilperin on August 6th, 2011
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