Dear MEL Topic Readers,
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.
No comments:
Post a Comment