Deep Ocean: Descent into the Mariana Trench (2017)
Douban
深海：沉入马里亚纳海沟
director:
Manabu Hirose
actor:
David Attenborough
region:
Japan
/
United Kingdom
release date: 2017
IMDb: tt13648420
overview
The Mariana Trench is nearly 7 miles deep. The water pressure is immense, and it's a world that's long been out of our reach. What creatures could survive such hostile conditions? This is an expedition to explore the earth's deepest frontier.