Member of the Oannes and mate to Nem. Omaroca lived on Earth during the Babylonian era, walking among men by day and retreating into the sea to sleep. Her original motivation for journeying to primitive Earth is unknown, but after her arrival she moved against the Goa'uld who had control of the population (at least one Goa'uld, Belos) to encourage them to fight against false gods.
Belos came down upon Earth (probably arriving in a ship) and killed Omaroca. Fortunately, her seeds of rebellion resonated through the people, who eventually buried the Egyptian Stargate and secured their place as a liberated people.
Fire and Water - Jackson's mind is probed for information from his textbook years while Nem locates data regarding his mate, Omaroca, who has not been heard from since Babylon.