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.

Hosted by: Hank Green
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Sources:
The Ocean Floor

Beneath the Seafloor

Brine Pools

Milky Seas

Unidentified Sounds

The 52Hz Whale

Abyssal Gigantism

source