Force Orb was a Force power which served as an attack. Under normal circumstances, it only worked underwater. It could also sometimes be used on land by gathering moisture in the area.
Kit Fisto utilized it during the Battle of Mon Calamari, creating a ball of air underwater and directing it at an opponent.
During the Battle of Mon Calamari, Kit Fisto and Anakin Skywalker attempted to use this power to make a makeshift air helmet for Padmé Amidala to breath when Riff Tamson broke her helmet spitefully with his jaws. They succeeded, but Jar Jar Binks's Gungan saliva proved a more effective seal.