JUL 28, 2015 11:02 AM PDT

What Makes the Sea So Salty?

WRITTEN BY: Kara Marker

Dr. Bob Ballard, an oceanographer, explains how the world's oceans can remain so salty all the time. Where does the salt come from? Scientists previously thought that rivers emptying into the ocean were bringing salty materials in and contributing to the large salt content of the oceans.

However, in 1979 scientists discovered the true process behind the saltiness of the seas. "Black smokers" pour microcrystals of salty minerals into the ocean constantly. They enable the ocean water to go inside the earth to "trade chemicals" every 6-8 million years. It is this continuous process that keeps the salt-to-water ratio so high. Now you know!
About the Author
  • I am a scientific journalist and enthusiast, especially in the realm of biomedicine. I am passionate about conveying the truth in scientific phenomena and subsequently improving health and public awareness. Sometimes scientific research needs a translator to effectively communicate the scientific jargon present in significant findings. I plan to be that translating communicator, and I hope to decrease the spread of misrepresented scientific phenomena! Check out my science blog: ScienceKara.com.
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