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