Manned submersible research vehicle “Shinkai 6500” that investigates plastic waste sinking on the seabed = 20th, Yokosuka City, Kanagawa Prefecture (provided by Japan Agency for Marine-Earth Science and Technology)
The Japan Agency for Marine-Earth Science and Technology’s manned submersible research vehicle “Shinkai 6500” departed from Yokosuka City, Kanagawa Prefecture on the 22nd to investigate the actual condition of plastic waste sinking in the deep sea around Japan. Take the support mother ship “Yokosuka” and spend about 20 days exploring the seabed off Sagami Bay and the Izu Islands.
The research vessel will dive to a depth of about 5,500 meters, collect plastic debris deposited on the seabed, and investigate the attached microorganisms. In the 2019 survey, we found plastic waste more than 30 years ago.
Professor Kenichi Kasuya of Gunma University will accompany him to install a new plastic material under development on the seabed and verify whether it will be rapidly decomposed by the action of microorganisms.