It is believed that Killer whales, Dusky dolphins and other aquatic animals can take advantage of their skin color to provide drag reduction owing to preferential solar heating. In this work, however, in addition, a first assessment is made on the possible additional effect of the precipitation of the oxygen form the supersaturated ocean over the superhydrophobic skin of those aquatic animals. With such goal, two different approaches are addressed, namely, the most probable homogeneous model situation in which the precipitated oxygen is homogeneous combined with the water in the boundary layer, and the heterogeneous model in which the oxygen is covering the skin surface forming a very thin microfilm