EN
A conception of the ecological model of the Gulf of Gdansk is presented. The model includes both the inflow of matter from land and the flow of energy into the environment of the Gulf. The model consists in submodels which solve the following issues: the inflow of solar energy into the sea surface, light penetration into the deeper parts of the sea, river advection, heat balance at the sea surface, production of organic matter, the spread of suspended matter as well as bacteria and three dimensional hydrodynamics. Configuration and short descriptions of these submodels are given.