Topic Reading-Vol.2596-5/21/2019
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Topic Reading-Vol.2596-5/21/2019
0422-27-5366
〒180-0006 東京都武蔵野市中町2-3-5 IIHA武蔵野1階
電話受付/月〜金 9:00-18:00
Topic Reading-Vol.2596-5/21/2019
Dear MEL Topic Readers,
Mariana Trench: Deepest-ever sub dive finds plastic bag
Located in the western Pacific Ocean, the Mariana Trench is the deepest natural trench in the world. The bottom of the trench sits about 11 kilometers below the ocean surface, whose depth is more than the height of Mount Everest and nearly as the same as the cruising altitude of a jetliner. There, water pressure is immense, more than 1,000 times the standard atmospheric pressure. To give you an example, 100 litter water on the surface becomes about 95 litter at 11-kilometer depth. Also, the temperature goes near the freezing level. It is an extremely challenging environment for any creature to live in and for a man-made machine to dive into.
Earlier this month, an American explorer and his team recently broke the world record and reached the bottom of the trench at 10,927 meters below sea level in a 6m-long, 3.7m-high submersible. There, he found a few marine creatures that had never been seen by humans. Also, he saw very-unexpected objects at the bottom of the deep sea, a plastic bag, and sweet wrappers.
So, if there is a plastic bag at the deepest spot in the oceans, how much plastic wastes are lying on the bottom of other oceans and seas?
Enjoy reading and watching the video and think how and when, if ever, humans will stop polluting the marine environment.
https://www.bbc.com/news/science-environment-48230157
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