People don't generally see how much trash end up in the ocean since water surface naturally obscure visibility, and pollution obscure it even further. It far fr

People don't generally see how much trash end up in the ocean since water surface naturally obscure visibility, and pollution obscure it even further. It far from just grocery bag. Littering is very common behavior, and cities located near rivers or the ocean has trash ending up in the water all the time. To get a bit of sense of the scale, every single dive center teaches divers about trash, and basically every employee of such places pick up trash as a matter of being able to do education. It is simply not a good practice to have students training diving when trash is littering around them. Measure a square meter and almost regardless where it is, there will be trash in it if located close to a city. In a city river there seems to be more trash than rocks. Decomposing nature fibers like paper or cloth does not leave microplastics. It also don't survive long time in the water so water near cities with bans on plastic bag and plastic eating utensils tend to be significant cleaner. The sad thing is that it is mostly just divers who will see this since the water tend to still have poor visibility (traffic, eutrophication, and other runoffs).