Thalassa is a BVI business company, incorporated and registered in the BVI on 26 September 2007. The Company was established as a holding company, and currently has one operating subsidiary, Thalassa Energy Services Ltd. ("TESL"), which was established to acquire marine seismic equipment, specifically a Portable Modular Source System ("PMSS™"). The PMSS™ is equipment which can be installed on a vessel in order to provide the seismic (sound) source to allow E&P companies to perform reservoir monitoring.
PMSS™ is used in Life of Field Seismic ("LoFS"), a process using ocean bottom cables or fibre optic networks to produce 4-D (3-D time-lapsed) seismic data to define reservoir fluid-flow.
Thalassa Energy Ltd. listed on the Alternative Investment Market of the London Stock Exchange on 29 July 2008, with symbol "THAL".