Transport of liquid CO2 to depths of 500-2000 m, and subsequent solution of CO2 in the sea water, is one of several CO2 mitigation options which have the potential to become both technically and economically feasible, and environmentally acceptable. A three dimensional Large Eddy Simulation(LES) code with conservation equations for salt and total carbond concentration is used to simulate spreading from a CO2 dropet plume, in an ocean linearly stratified through a salinity gradient of 0.025 psu km(-1) Results from an integrated model for release of CO2 droplets rising in the water column are used to prescribe the carbon source for the LES model. For a plume with release of 25 kg-CO2 s(-1) the CO2 enriched water spreads out at a neutral depth in a layer with center at a depth about 300 meter below the release port ranging from an upper bound at the center of the plume down to 1600 meter. The pH value in this layer becomes low and will affect the marine life.