A penny-sized jellyfish has been spotted in the western part of Lake Erie as well as in western Pennsylvania.

The stinging cells of these freshwater jellyfish can't pierce human skin.

The non-native jellyfish is not considered invasive since it is not an impactful predator of small fish or fish eggs.

A freshwater jellyfish originally from Asia is roughly the size of a penny and is a rare sight in the Great Lakes.

Most of the time, they're stuck to the bottom of the lake as polyps, according to the Pennsylvania Department of Environmental Protection . But occasionally they grow into the traditional jellyfish form, free to bob about in the water.

And they've been spotted at least twice in recent weeks in Lake Erie, as far apart as Put-in-Bay in the west and Erie, Pennsylvania , in

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