Phillip Lockett of Duluth sent along a couple of photos of the zebra mussel infestation on Pike Lake near Duluth. He dived the lake over the past weekend.
“I was astonished to see how bad the zebra mussels were in the lake,” he wrote in an e-mail. “This is a sunken boat and it is completely encrusted. Wow. Everything less than 20 feet (deep) had mussels all over them. Including the snails and native clams.”
Zebra mussels are an invasive species that have spread to many inland lakes as well as Lake Superior. Among other issues, they also filter aglae from the water, interrupting the food chain and making the water much clearer.