The final paper analyzes the cruising destinations of the Adriatic Sea. The countries included in the analysis are: Croatia, Italy, Slovenia, Montenegro and Albania. The analysis was made on the basis of data on the arrival of cruise ships and the number of passengers. After analyzing the ports by the countries of the Adriatic Sea, a comparison was made between the port of Dubrovnik and the port of Venice. The reason for choosing the port of Dubrovnik and the port of Venice is due to the similarity because they are the most developed and busiest cruise seaports on the Adriatic. Due to the large number of ships in both ports, restrictions on the number of ships and passengers have been introduced due to negative factors affecting the environment and the domicile population. In addition, Dubrovnik and Venice are cities rich in history, culture and are under UNESCO protection. After the analysis, the impact of cruising tourism on ecology, which is an important factor influencing tourism and its development in the future, is presented. Cruising tourism has great potential for development in the Republic of Croatia, but investments in infrastructure and support from relevant ministries are needed.