Ingenious – doesn't matter that he's 19 years old, the impact that this would have is enormous. Quoting from boyanslat.com:
Why move through the oceans, if the oceans can move through you? Fix the sea water processors to the sea bed, and save vast amounts of funds, manpower and emissions.
Not just that, but because the solution does not involve mesh nets, there's close to no bycatch. Further, the solution is self-supportive, being powered by solar and wave power, thus independent of external energy sources.
This concept is so efficient, that we estimate that by selling the plastic retrieved from the 5 gyres, we would make in fact more money than the plan would cost to execute. In other words; it's profitable.
19-Year-Old Develops Ocean Cleanup Array That Could Remove 7,250,000 Tons Of Plastic From the World’s Oceans
19 year old Boyan Slat has designed the Ocean Cleaup Array which could reduce the world’s oceanic garbage patches by removing 7,2500,000 tonnes from them.