2009-04-14
07:51:38
A recent discovery of zebra mussel shells in a Minnesota lake has the state's Department of Natural Resources issuing warnings to boaters of the importance of making sure their vessels are free of invasive species before launching.
The D.N.R. is not certain if the shells found in Prior Lake were from living mussels or were brought there, the department says its likely the lake is infested.
Zebra mussels were first discovered in Minnesota 20 years ago in the Duluth harbour and have since spread to a number of inland lakes.
