Millions of tons of plastic debris are polluting world's oceans.
Plastic reaches the oceans mostly from land through rivers and waterways, and then accumulates in 5 areas of high concentration, called gyres.
Not only does it directly kill hundred-thousands or even millions of aquatic animals annually, its fouling may spread harmful algae and other invasive species, and furthermore serves as a transport medium for pollutants (including PCB and DDT), accumulating in the food chain.
Plastic pollution costs governments, companies and individuals millions of dollars in damages per year, due to loss in tourism, vessel damages and (inefficient) beach clean-ups.
The ultimate solution to plastic pollution is clear; we need to close the tap, by ending our reliance on disposable plastic items/packaging, we need proper waste management globally, and we need to become aware of the problems our garbage is creating.
It will require drastic changes on legislative, industrial and individual levels of society.
However, even if we close the tap, we need to get out what's already trapped by the currents of the gyres.
We'll need a combination of both worlds, and we'll need them soon.