The correct answer is estuary. I even have a back-up reason. Here I go...
Explanation-A partially-enclosed coastal region where sea water mixes with freshwater is called an estuary. Estuaries are typically found at the mouth of a stream or river. Estuaries are complex ecosystems, rich in marine life.
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Brackish water. also perhaps a "halocline".
brackish
brackish water
just add salt to fresh water
fresh water that is mixed with salt water
Where a freshwater river drains into an ocean, the fresh water may mix with the salt water ... this is called brackish water.
the entrance to the ocean
brackish water
It is quite easy to mix salt water and fresh water, which produces a more dilute form of salt water.
just add salt to fresh water
no
an estuary is a mix of salt water and fresh water.
Estuary
it is a mix of fresh water and salt water
That is called estuaries when fresh and salt water mix , (combined)Ps. im 9 years oldestuaries - ash (:Estuaries.
fresh water that is mixed with salt water
Where a freshwater river drains into an ocean, the fresh water may mix with the salt water ... this is called brackish water.
Mix fresh water and salt water
the entrance to the ocean