Lim Bay is a unique geographic feature near Vrsar, which are located in Istria. The name lim is not only the channel, but the Bay and the valley in this area. This name comes from the Latin word meaning “threshold”. The channel is a kind of boundary between two Roman provinces.

The river Patinize, with a length of 35 kilometers, converted in lim Bay, which the Croats call channel because of its small width. The geological history channel is pretty poor - has been intensively mined limestone. This production has been one of the causes of the drying up of the flow of water and now the water resumes its course along the valley only during heavy rains.

The canyon is quite high, it reaches 150 meters. On both sides of the channel poppies grow, deciduous trees (oak and ash), but in the North are quite common evergreens. The mouth is rich with fish, oysters, mussels. Marine flora and fauna here are particularly common due to the unique composition of sea water, the salt concentration is not very high, but enough oxygenated and has the right to existence of many species temperature.

The channel is a natural breeding ground and wintering area for many species of fish. For this reason, it is overseen by environmental organizations. Growing and catching oysters and fish in the canal is one of the main occupations of the local inhabitants.