Sea of Okhotsk
From Memory Alpha, the free Star Trek reference
The Sea of Okhotsk was a major sea of the Union of Soviet Socialist Republics. Sakhalin was a large island in this sea. The Amur River flowed into this sea. The port cities of Magadan and Okhotsk were located on the north coast of this sea. (TOS: "The Cage")
This sea was identified on a political map of the North Pacific Region in the USS Enterprise library computer. This map was retrieved by the Talosians when they accessed the starship's computers in 2254.
