The study of the flow generated by calanoid copepods as well as its interactions with environmental flow constitutes what is known as hydrodynamics of copepods. Most studies on the matter assume that copepods move in a fluid flow of uniform density, ignoring this way the presence of density interfaces. However, it is well known that water column varies from homogeneous to stratified state as solar heating it receives vary seasonally. Previous numerical studies have demonstrated that vertically moving objects in a stratified fluid experiment an extra drag than if they were moving in a homogenous fluid. It means, that copepods in a stratified water column will be experiencing an extra drag as they migrate vertically during the day. In order to understand the effect of stratification in the flow patterns produced by a copepod, as well as the associated drag, in this study the momentum equations describing a stratified flow about a copepod are solved numerically using curvilinear coordinates. Results for the density and velocity fields under different flow scenarios are presented and discussed.