By Dan Gunderson, Minnesota Public Radio News

For many Minnesotans, summer evenings at the lake are perfect for a refreshing swim after a hot day.

But if you swim in Pelican Lake, a popular lake in Otter Tail County, you’d better wear shoes, or risk getting sliced by razor-sharp zebra mussel shells.

“I’m not talking just little cuts, but razor blade cuts, like drops of blood up the dock,” said Erika Johnson, whose family has owned a cabin on Pelican Lake for three generations.

Since zebra mussels first showed up in large numbers in Pelican Lake a couple years ago, residents and visitors have learned to protect their feet by wearing shoes in the water.

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