Original Fact: Salinity in the Gulf of Mexico is about 36 parts per thousand.[1]
Existing statement with added citation: Almost half of the basin consists of shallow continental-shelf waters.[2]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e6/US_Gulf_of_Mexico_offshore_gas.jpg/220px-US_Gulf_of_Mexico_offshore_gas.jpg)
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- ^ "salinity | science | Britannica". www.britannica.com. Retrieved 2021-12-21.
- ^ "Gulf of Mexico | gulf, North America | Britannica". www.britannica.com. Retrieved 2021-12-21.