Point and Non-Point
https://www.google.com/search?q=coastal+pollution&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiIjvTCscvaAhVEwbwKHbt3DKEQ_AUICigB&biw=1366&bih=662#imgrc=bUdeN5if4OtKBM: Point and nonpoint source pollution continue globally, resulting in the steady degradation of the coastal and marine ecosystem. People don't know how to throw their own garbage at the proper place that caused shore and coastline pollution. A large area of garbage floating in the ocean. Trashes like plastic that can't dissolve could cause a problem with the fishes and sea animals.