Where is the garbage going

Plastic floating in our oceans seems to be disappearing.

eaten by fish, or degenerated into small pieces by bacteria?

one cause of local flooding here after storms is that the plastic bags discarded tend to clog up the drains. True, our open air sewers still drain (and the plastic stays in place until collected about twice a year) but when the neighbors have trash cans outside and they still discard plastic drink bags in the street, one does have to wonder.