The Munin Sea is a body of water to the south of the Edda supercontinent on the Human colony, Harvest. It is one of two seas on Harvest, the other the Hugin Sea to the north of the Edda supercontinent.
The name Munin comes from Norse mythology, which means "memory". Along with Hugin, which means "though", they are a pair of ravens associated with the Norse god Oden. Oden would send them out in the morning and they would travel the world, gathering information, returning in the evening and perch on his shoulder sharing the news they gathered.