Deb Tirmenstein and mussel-detecting Ismay search a boat for aquatic invasive species during the Mussel Walk last week. (Daniel McKay/Whitefish Pilot)
June 4, 2019
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June 4, 2019 1:59 p.m.
Students search lake shoreline as part of science lesson
A zebra mussel is a small, roughly 1-inch wide creature with alternating dark brown stripes over the rest of its tan shell.