In this June 4, 2010 photo, In this June 4, 2010 photo, Theaux LeGardeur, owner of the Backwater Angler fly shop, holds up an example of "rock snot", at his store in Monkton, Md. The state Department ... more 
In this June 4, 2010 photo, In this June 4, 2010 photo, Theaux LeGardeur, owner of the Backwater Angler fly shop, holds up an example of "rock snot", at his store in Monkton, Md. The state Department of Natural Resources plans to prohibit wading with felt soles starting March 21 to curb the spread of invasive organisms that can get trapped in the damp fibers and carried from one body of water to another. less 
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Associated Press | Photo By Rob Carr
Sun, Feb 20, 2011 12:38 PM EST