Any lake, stream, sea, river, or ocean composed of water.
“Lake Gusev was a lake on the human colony world of Eridanus II. The boy who would become...Lake Gusev
“The Csurdon Sea is a body of water[note 1] in between the Sanghelios continents of Yermo and...Csurdon Sea
“The Munin Sea is a body of water to the south of the Edda supercontinent on Harvest. ↑ Halo...Munin Sea
“The Hugin Sea is a body of water to the north of the Edda supercontinent on the UEG colony world...Hugin Sea
“The Twin Forks River was a river on the planet, Onyx. During the Battle of Onyx, Kurt-051, along...Twin Forks River
“The Slidr River was a murky, slow-moving river on the planet Harvest. It follows the contours...Slidr River