Ocean currents have brought the worst of humanity to the deepest recesses of the ocean. The effects on sea life have been profoundly disturbing.
NOAA Office of Ocean Exploration and Research researching the Mariana Trench found garbage including can’s of SPAM and beer cans, pharmaceutical waste, world war munitions, rope, plastic and other ugly reminders of humanities impact on our oceans.
The results have been , tested for signs of pollutants called Persistent Organic Pollutants (POPs) were positive for PCBs and PBDEs.
Science Alert says, “Scientists have found that “extraordinarily high” levels of banned industrial chemicals are contaminating marine life more than 10 km deep (6 miles) into the Mariana Trench, and just a few kilometers above that, beer cans and plastic bags litter the seabed.
A team from Newcastle University in the UK has been sampling small, prawn-like crustaceans called amphipods from the depths of two of the world’s deepest trenches – the Mariana Trench in the Pacific Ocean, and the Kermadec Trench near New Zealand.”
While some of the garbage found in the Mariana Trench could have come from Japan, South Korean, China, Vietnam or the Philippines, some could have come from Canada, the United States or Australia just as easily.
As the winds sweep across the ocean surface, they drive the ocean surface currents. Over periods of months to years they set up a global circulation of surface currents, which reflects the patterns of the prevailing winds.