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What if the mouth of the Amur River were further south?

The Sea of Okhotsk has a double layered area of water containing a thin layer of surface water with a low salt content and water with a high salt content underneath.

What would it be like if the Amur River was located further south than it is now?

The fresh water flowing into the Sea of Okhotsk would be a lot less than what it is now and would not have formed a double layered sea.

Then, we might not be seeing drift ice like this.