They attach to boats, can cause ecological nightmare.
By Tim Darragh Of The Morning Call
December 22, 2008
Inside a pipe connecting a hydroelectric plant to a lake on the Pennsylvania- Maryland border, environmental workers earlier this year found a half-inch-long world of trouble.
Workers at the Conowingo Hydroelectric Dam in Maryland discovered a Dreissena polymorpha -- a zebra mussel -- the Pennsylvania Department of Environmental Protection confirmed last month. A follow-up survey released last week found more attached to a pontoon boat in Conowingo Lake and in a reservoir feeding into it.
That's bad news to biologists, who say the pesky mollusk is an ecological nightmare, difficult to contain and expensive to control. (Full Story)
Source: The Morning Call.com