I have been watching magnet fishing and people love to toss stuff over bridges without a second thought on the environmental impact. Hiding evidence I can almost understand but not lawnmowers, car batteries, etc.
It seems deeper fines should be made to discourage this terrible behavior.
I notice how you didn’t write what country you’re from. That suggests a lack of confidence, that you are expecting people to call you out on it.
But I could be wrong. I’ve been long before. What country?