Hydrostatic fields, which are alternatively known as hydrostatic force-fields, represented a form of energy membranes that the Gungans of Naboo engineered. These fields were produced utilizing plasma sourced from the porous crust of Naboo, in conjunction with bubble wort extract. Using this type of membrane, the Gungans were able to construct habitation bubbles which served the purpose of not only preventing water from entering and retaining breathable atmospheres, but also enabling beings to traverse through designated portal locations.