Melina II was the second planet in the Melina system. The Gray Municipality was located here, as well as two medical installations, the Wiemer Medical Facility and the Taylor Hospital.

The planet was visited by a group of Ullian telepathic historians in the 2360s, who collected a library of memories from the inhabitants. There were no reported cases of unexplained comas following their visit. However, several apparent cases of Iresine syndrome were later discovered to have been caused by telepathic memory invasions through the Ullian Jev. (TNG: "Violations")