San Sebastian's aquarium is fittingly located along the harbor at the end of the Bahía de la Concha in the Old Town.
A popular tourist attraction, its 31 habitats are filled with colorful aquatic species, from tropical fish and sharks to species unique to the Atlantic and Cantabrian areas.
The aquarium also features an Oceanographic Museum with exhibits that display ship models, navigational instruments, and documents.
A highlight of the museum is the Oceanarium, an underwater exhibition space. A walkway leads through a clear tunnel with 360-degree views of the swimming fish, sharks, and sea turtles in the aquarium.
