The method and apparatus for a submersible electronic device provides an electronic device such as, for example, a digital camera (100), PDA, computer, or the like, which may comprise a user interface, a body (101), and an electronic assembly disposed within the body, the device being characterized in that the housing is completely filled with a perfluorocarbon (PFC) liquid, or a hydrofluoroether (HFE), or a perfluoropolyether (PFPE), or an aqueous coolant composition comprising a mixture of an alkylene glycol (such as propylene glycol), de-ionized water, and a corrosion inhibitor (such as benzotriazole). A method of introducing any of the aforementioned liquids into the device includes submersion into the liquid inside a vacuum chamber (150) so that air pockets are removed to provide total liquid dispersion into device cavities, and the like. The device is then sealed and removed from the chamber (150).