The overall aim of the Hydrobiological Station of Rhodes is to develop and disseminate scientific knowledge on the marine environment and its conservation.

• Oceanographic research- in collaboration with H.C.M.R.’s Institutes- in the Aegean and Mediterranean Seas

• Co-operation with Hellenic and foreign research  institutions, Aquariums and Natural History Museums sharing experience and know-how  on the scientific research and also on the operation and maintenance of aquariums-museums.

• Study of endangered aquatic species included in the International Convention CITES, such as sea turtles, whales and the Mediterranean seal.
• Study and monitoring of alien species entering the Mediterranean Sea from the Red Sea, through the Suez Canal (Lessepsian immigrants)
• Study and protection of the endemic in Rhodes Island freshwater fish Gizani (Ladigesocypris ghigii)