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Smile with Daniel · Today · 9 min

Where Does Ocean Salt Actually Come From?

Daniel always assumed the ocean was just born salty. It wasn't. It became salty. Gradually. Over billions of years. The answer involves rain, rocks, rivers, and a system so well balanced that ocean salinity has been roughly stable for hundreds of millions of years. What you will find in this episode: Why rainwater is slightly acidic and what that does to rocks over time How rivers carry dissolved minerals to the sea -- and why rivers taste fresh but oceans don't Why the ocean doesn't just keep getting saltier forever What hydrothermal vents on the seafloor have to do with salt The 150-meter fact that still stops people mid-sentence Why the Dead Sea is ten times saltier than the ocean The closing line that reframes every swim you have ever taken Short, elegant, and the kind of episode that makes the ocean feel completely different. Listen, wonder, and learn. Find us @smilewithDaniel everywhere.

0:00-9:46

transcript

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show notes

Daniel always assumed the ocean was just born salty.

It wasn't. It became salty. Gradually. Over billions of years.

The answer involves rain, rocks, rivers, and a system so well balanced that ocean salinity has been roughly stable for hundreds of millions of years.

What you will find in this episode:

  • Why rainwater is slightly acidic and what that does to rocks over time
  • How rivers carry dissolved minerals to the sea -- and why rivers taste fresh but oceans don't
  • Why the ocean doesn't just keep getting saltier forever
  • What hydrothermal vents on the seafloor have to do with salt
  • The 150-meter fact that still stops people mid-sentence
  • Why the Dead Sea is ten times saltier than the ocean
  • The closing line that reframes every swim you have ever taken

Short, elegant, and the kind of episode that makes the ocean feel completely different.

Listen, wonder, and learn.

Find us @smilewithDaniel everywhere.