Years ago, when I did scuba diving, there were places we would dive that were meccas for ice fishing in the winter, and in the summer, the bottom was littered with beer/soda cans/bottles, sometimes so many that it formed a small pyramid-type mound ( a few not so small.).
Unfortunately, the back packers motto of pack it in, pack it out doesn't seem to apply to some of our lake and stream users.
Nice to see those who get caught get a hefty fine.