The Ministry of the Environment and the protection of the territory, in concert with the Ministries for Cultural Heritage and Activities, Infrastructures and Transport, Agricultural and Forestry Policies and in agreement with the Campania Region, has established the Submerged Park of Baia ( DI 7.08.2002), equivalent to a marine protected area. The area includes the Bacoli and Pozzuoli coast between the head of the southern limit pier of the port of Baia (OMLIN pier) and the Lido Augusto pier (Pozzuoli) and is divided into three areas: integral reserve (A), general (B), partial (C). The provisional management of the submerged park has been entrusted to the Superintendence for Archaeological Heritage of Naples and Caserta. Subsequently, with the decree of the Minister Dario Franceschini, the Special Superintendence "Archaeological Park of the Phlegraean Fields" was created, which was entrusted, after a few years, with the definitive management of the Submerged Archaeological Park of Baia.

The Submerged Park of Baia has as primary purposes
• environmental and archaeological protection and enhancement, also for employment purposes;
• the dissemination of knowledge of the biology of marine environments and submerged archaeological heritage;
• carrying out educational programs for the improvement of culture in the fields of ecology, marine biology and archeology;
• the realization of scientific programs to deepen the knowledge and study of the area;
• the promotion of a compatible socio-economic development by favoring traditional local activities already present, resident citizens and businesses based in the municipalities falling within the area.

The submerged parks of Baia in the Gulf of Pozzuoli and of Gaiola in the Gulf of Naples are established pursuant to art. 114, paragraph 10, of law no. 388 of 2000 (Finance Law 2001) by decree of the Minister of the environment, in agreement with the Ministers for cultural heritage and activities, transport and navigation and agricultural and forestry policies and in agreement with the Campania region.
They consist of a marine environment with significant historical, archaeological-environmental and cultural value.