Manaan

Manaan was an aquatic planet in the Pyrshak system. It was home to the Selkath, an amphibious species. The planet was completely covered in water and was the only known source of the healing liquid, kolto, in the galaxy. Controlled by the Rakata during pre-Republic history, it became independent following the collapse of their Infinite Empire. In the years leading up to and during the Jedi Civil War, kolto was so important to the galaxy that the Selkath were able to use their monopoly to enforce their policy of neutrality and autonomy.