Original poster is in Lake Erie, I'm in Lake Ontario (down stream), I have never seen zebra mussels like his. We had a cottage on Georgian Bay (up stream), 15 years ago there were mussels but not many now, and many years ago we had the mussels in Lake Ontario....but not many now. So what's going on with the zebra mussels???? I thought that mother nature figured out a way to counteract them, as mother nature often diminishes invasive species, is this a encore for the zebra mussels? I hope not....
dj