Re: Cargo ships source of plastic pollution
Many oceanic islands suffer high levels of stranded debris, particularly those near subtropical gyres where floating debris accumulates. During the last 3 decades, plastic drink bottles have shown the fastest growth rate of all debris types on remote Inaccessible Island. During the 1980s, most bottles drifted to the island from South America, carried 3,000 km by the west wind drift. Currently, 75% of bottles are from Asia, with most from China. The recent manufacture dates indicate that few bottles could have drifted from Asia, and presumably are dumped from ships, in contravention of International Convention for the Prevention of Pollution from Ships regulations. Our results question the widely held assumption that most plastic debris at sea comes from land-based sources.
Above quote comes from the source article.
I call BullS**t!
"Presumably dumped from ships" is based on date of mfg. Why couldn't a bottle mfg in China be dumped into a river elsewhere in Asia or in S America? Also, 2yrs seems like plenty of time for a bottle to be carried almost anywhere. (a 1 kt current could carry a bottle about 18000 miles in 2 yrs)