I can proudly say that I grew up on the banks of Cedar River, and mom still lives there.
It's cleaned up greatly since 1970 when our family moved there. Fish kills all the time. In the last 20 years though, we've watched wildlife return. Bald eagles, osprey and river otters.
My father would fondly tell of the time he went down to the marina on San Juan to take his boat out. He came home and told us "Someone's been eating crabs on my boat!" We asked, you mean they broke into the boat?
"No, someone's been eating crabs on my boat and left their shells on the swim deck"
Otter had found himself a nice place to catch crabs, bring them to the nice "dining table" and dine. Darn otters don't know how to clean up after themselves
One attempted to cross Lake Shore Blvd one morning and my mother thought, "Dear Lord, that is the biggest rat I've EVER seen come out of those woods."
Was a wayward otter and she chased it with a broom back through the gate and close it. No need for our precious friend to get smashed by speeding cars.