Skip to main content

7 things we don't know about the ocean

7,520,500 Views

4,493 Questions Answered

Best of Web

Let’s Begin…

The ocean covers 70% of the planet, but humans still don’t know very much about it. In this video, Hank Green from SciShow discusses seven mysterious ocean topics.

Blue whale calls are normally somewhere between ________ Hertz in pitch.

About TED-Ed Best of Web

TED-Ed Best of Web are exceptional, user-created lessons that are carefully selected by volunteer teachers and TED-Ed staff.

Meet The Creators

More from Awesome Nature