|Location:||Milky Way Galaxy|
|Native Species:||Ocean Demons|
|First Appearance/Mention:||The Ocean Demons|
The water world of Gilziab is the home planet of the Ocean Demons. It is located in the constellation of Ophiuchus (The Serpent Bearer), 40 light-years from Earth. The Third Inspector mentions it to P. T. Barnum in the serial "The Ocean Demons" but is far too sensible to take him there.