The northernmost part of the Mediterranean Sea, with a high diversity of habitat types from the high seas to the habitat types of the muddy and hard seabed and a combination of boreal and Mediterranean plant and animal species, which makes marine waters under the jurisdiction of the Republic of Slovenia extremely important from the point of view of biodiversity. There are very diverse living environments, including Preoraligen, communities with various cystosira species and marine flora meadows, including endangered Posidonia, law and small seagrass. In the part of the Adriatic Sea under the jurisdiction of the Republic of Slovenia, more than 1700 animal species were recorded (above 1500 neuretances and almost 200 vertebrars), many of which are rare and threatened. Particular mention is made of brain sponge and common axinels, stone coral, gastropods and striped porcelanko, mussels, dates and sea bream, cancer of a large crab, glanderfish, common and large marine mace, sea horses and glauce and dolphin-sized porpoise. Ecologically important areas (EPOs) in or along marine waters under the jurisdiction of the Republic of Slovenia are: Sea and sea coastline (ID 70000), Secovelska salts with Seco (ID 75200), Rt Madona (ID 78700), Piran Clif (ID 79300), Lakes in Fiesa (ID 79200), Strunjan (ID 96800), Izolane (ID 79800), Žusterna – Izola (ID 78500), Žusterna (ID 78600), Škocjanski Stok (ID 77600), Rižana – estuari (ID 79700), Sv. Nikolai (ID 78900) and Debeli Rtic (ID 78300). Activity: Implementation of measures laid down by legislation for the protection and conservation of nature.

The measure addresses existing landscape parks on marine waters and on the coast, based on existing legislation. The landscape park is a wider protected area, with a high-quality and long-lasting interplay between mankind and nature, which has a high ecological, biological or landscape value (Op. wider protected areas are areas of nature where there is great abiotic, biodiversity and landscape diversity and a high density and diversity of natural values, which can also be complex and functionally interconnected). The areas of landscape parks in or adjacent to maritime waters under the jurisdiction of the Republic of Slovenia are: The Debeli rtic landscape park (www.uradni-list.si/glasilo-uradni-list-rs/vsebina/2018-01-2463/odlok-o-krajinskem-parku-debeli-rtic), the Strunjan Krajina Park (www.pisrs.si/Pis.web/pregledPredpisa?id

The measure addresses the nature reserves established on the basis of existing legislation in the area of marine waters and the coast. The nature reserve is a narrower protected area of geotopes, habitats of endangered, rare or snailous plant or animal species or areas of importance for the conservation of biodiversity, which is maintained through a balanced action of humankind. The areas of nature reserves in or along marine waters under the jurisdiction of the Republic of Slovenia are: Strunjan Nature Reserve (www.pisrs.si/Pis.web/pregledPredpisa?id