American Intruder Lurks In Scottish Streams, Clawed And Hungry

Forget Nessie: there's another insidious creature living in the waters of Scotland.

The story starts in the streams and lakes of the northwestern United States, where North American signal crayfish are a familiar sight. Turn over a rock and you may well encounter one.

But in Scottish streams and lochs, these creatures ...Read More

Source: NPR Science - ingested into KQED

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