About 20 years ago zebra mussels overran the Ohio river. Every rock, every stick, every surface was covered with them. They were clogging water intake pipes. Doom and destruction was forecast big time! Then something came along that liked to eat them and 10 years later they are mostly gone. Funny how things like that work out. Almost like there’s a plan to keep things in line...
Any idea what that thing was? I’ve a feeling that info might come in handy here in the not-too-distant future.