Harbors around the world have [ plastic fibers in the water ]( http://www.theguardian.com/world/2014/aug/25/sydney-harbours-plastic-pollution-alarming-levels ) , which can harm fish. It will take a lot of work to find out how these fibers affect various species of fish.
Ссылка: https://stallman.org/archives/2014-may-aug.html#26_August_2014_%28Plastic_fibers_in_harbors%29