I've been visiting all of the Great Lakes except Lake Ontario pretty regularly since I was a kid in the 1980s. The zebra mussels have really improved the clarit

I've been visiting all of the Great Lakes except Lake Ontario pretty regularly since I was a kid in the 1980s. The zebra mussels have really improved the clarity of the water, but at significant expense to humans, native mussels, and likely a lot of other species[1]. The effect on the inland lake where we stay has been dramatic, too. The water clarity changed dramatically in just a few years. Their effects make the water very photogenic, but I'm sure it's a net negative. [1] https://www.greatlakesnow.org/2020/02/zebra-mussels-impact-good-bad/ https://www.greatlakesnow.org/2020/02/zebra-mussels-impact-g...