7 Things We Don't Know About the Ocean

The ocean covers 70% of the planet, but humans still don’t know very much about it. In this episode, Hank discusses seven mysterious ocean topics.
CHAPTERS
GLOBAL VIEW OF GRAVITY ANOMALIES Credit: NASA Earth Observatory / Joshua Stevens
1:08
MID-ATLANTIC SEAFLOOR Credit: NASA Earth Observatory / Joshua Stevens
1:21
1 WHAT'S THE OCEAN FLOOR LIKE?
1:57
WHAT'S UNDER THE SEAFLOOR?
2:09
BRINE POOLS
3:06
BRINE POOL Credit: NOAA/OER / BOEMRE
3:19