Aquarium of Rhodes – Hydrobiological Station is a historic marine research centre and public aquarium located in Rhodes Town on the island of Rhodes. It is housed in a distinctive 1930s Art Deco building originally constructed during the Italian administration of the island. Today, it operates as both a scientific institution and a visitor attraction focused on Mediterranean marine life.

The attraction, known as Aquarium of Rhodes, features underground-style exhibition corridors designed to resemble a natural sea cave. Inside, visitors can observe tanks containing a wide variety of marine species such as fish, crustaceans, octopuses, sea turtles, corals, and other organisms native to the Aegean and eastern Mediterranean waters. The facility also supports marine research and conservation work, with some areas dedicated to scientific study.

What makes the Aquarium of Rhodes particularly notable is its combination of public education and active marine science. Unlike larger commercial aquariums, it emphasizes research, conservation, and awareness of local ecosystems. Its historic architecture, atmospheric underground design, and focus on regional marine biodiversity make it a distinctive cultural and educational attraction on the island.