M edulin Bay is a shallow area located between Cape Kamenjak and Cape Marlera whose average depth does not exceed 20 meters. The Kašteja peninsula divides the bay into an internal and external part, and the whole area includes a total of 9 islands and islets. This very complex habitat contains a number of habitat types. The sandy bottom covered in muddy sand can be found in the internal part of the bay, while the external part contains numerous reefs.
Nutrient salts are important for the internal part, where there are numerous organisms that use the salts for food by filtering seawater salts. Typical examples of such organisms are bivalve shellfish, which are also grown in the Medulin Bay.
T he settlements of seagrass Cymodocea nodosa and Zoostera noltii are also very common there, while in the external part of the bay there are meadows of Posidonia oceanica, which has a number of important biological roles. The area is very important for a large number of fish and other species that feed and breed here and it is very important to preserve and to minimise as much as possible the negative human impact. Human activities are numerous in this area, from shellfish farming, use of waterways to construction activities, and the pressure increases in the summer months with the arrival of a large number of tourists.
T his area is very significant because of its natural values, and any form of coast reclamation has a very negative impact on the life developing here. The inclusion of the area in the Natura 2000 network has pointed out the importance of the bay and its role in the overall ecosystem. The task of all of us who use this area, in any way, is to ensure that our actions do not adversely affect the flora and fauna that here find their food and home.