Name: Why Is the Ocean Salty?
Uploaded: 2015-08-03T22:57:04
Duration: 1 min
Description: How is it that we didn't know why the ocean was salty until 1979? National Geographic Explorer-in-Residence Bob Ballard explains why such a basic question remained a mystery for so long-and where his team finally found the answer.

Why Is the Ocean Salty?

How is it that we didn't know why the ocean was salty until 1979? National Geographic Explorer-in-Residence Bob Ballard explains why such a basic question remained a mystery for so long-and where his team finally found the answer.

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