The San Sebastián Aquarium is a captivating oceanographic museum located on the city’s harbor. Housed in a building from 1928, it combines marine life displays with the history of Basque seafaring. Visitors can explore tropical fish, rays, and native Cantabrian species in beautifully designed tanks. A highlight is the 360° underwater tunnel, where sharks, turtles, and schools of fish swim all around you. The museum also showcases maritime artifacts, including a large whale skeleton, making it a unique mix of science and culture.
The aquarium spans three floors, featuring themed aquariums, interactive touch tanks, and historical exhibits. Over 200 species are represented, making it both educational and visually stunning. Visitors typically spend 1.5–2 hours to fully explore all exhibits. It is accessible for visitors with reduced mobility, with ramps, elevators, and adapted facilities. The aquarium caters to families, offering engaging displays that appeal to both adults and children.
Wear comfortable walking shoes, as there’s a lot of ground to cover across multiple floors. The underwater tunnel is best visited when less crowded for a more immersive experience. Feeding times, usually around midday, are particularly engaging and worth timing your visit to see. The aquarium is family-friendly and fully accessible, making it easy for everyone to enjoy.
The aquarium is within walking distance of San Sebastián’s Old Town and La Concha Bay. Public buses stop nearby, and there are parking options close to the harbor if you prefer to drive. Walking along the quay offers beautiful views and is the most scenic way to reach it.
Opening hours vary by season. In summer, it is generally open from 10:00 to 21:00, while in other months it closes earlier, around 19:00 or 20:00. The ticket office usually closes one hour before the aquarium itself. Mornings tend to be quieter, providing a more relaxed experience.