NEMOH (Nomadic Environmental Media Operated Host), is a novel, patent pending treatment vessel developed by CETCO Oilfield Services for processing and retaining fluid in a subsea environment. It is remotely operated and can operate at depths over 6,000 ft. NEMOH is an innovative solution for the problematic treatment of fluids at subsea levels and offers flexibility - it is able to be recovered in a reverse process, disconnected, or be guided by an ROV using a ship`s winch, or it can be moved along the seabed to another location for another application. It is also extremely effective, since it can treat a number of constituents depending on whether the materials need to be oxidized, coalesced or neutralized because it can be operated with different media types. NEMOH may also be operated as a stand alone vessel (single pass) or in combination in series (multi-pass) with additional vessels utilized for processing fluid with higher levels or multiple constituents.