We've all seen the discarded shells of fresh-water mussels that live in the sandy bottom of the lake but until this week I hadn't seen a living mussel. What tipped me off to the one I spotted in front of my property was a furrow in the sand. It was easy to follow it to the mussel that was plowing through the sand on the bottom. I'm going to take a wild guess and say that it is Eastern elliptio. Zone 1, grid 3531. Here are a couple of views.