Salinity is the measurement of how salty the water is.
You will probably find that salinity is nearly the same at the three spots you measured. Scientists measure salinity in parts per thousand (ppt).

You will see that the measurements only range from 32 ppt to 37.5 ppt.

That means out of 1000 grams of water, the salt content only varies by about 5 grams. (1gram = the weight of a paper clip)

There are three main factors that affect salinity:

  • wind
  • rain
  • evaporation

Questions: Click on the question to see the answer

Why is the ocean salty?

What do you think might make the ocean less salty in some places?

What is the saltiest body of water in the world?

How do you make sea water?

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