World inhabited by at least one member of the Oannes race, Nem. The world is one of at least four planets orbiting a gas giant. Pockets of volcanic gasses litter the land. Near the Stargate lies a sea where Nem resides.
Fire and Water - SG-1 travels to Nem's planet and encounters the member of the Oannes, who captures and convinces them that Daniel is dead -- so he may take his time in extracting information from the archaeologist.