Nausicaá is a public aquarium located in Boulogne-sur-Mer, France. It is one of the largest aquariums in Europe and attracts around 600,000 visitors each year. The aquarium was opened in 1991 and has since become a major tourist attraction in the region.

The main focus of Nausicaá is the marine environment and the preservation of marine life. The aquarium contains over 58,000 animals from more than 1,000 different species. The exhibits showcase a variety of marine habitats, from the depths of the ocean to the rocky shores, and include species such as sharks, rays, jellyfish, sea turtles, and tropical fish.

One of the highlights of Nausicaá is the massive main tank, which holds 10,000 cubic meters of water and is home to a variety of large fish and marine mammals. Visitors can watch sea lions and fur seals swim, play, and interact with their trainers in the Seals and Sea Lions Reserve.

In addition to the aquarium exhibits, Nausicaá also offers a range of educational and interactive activities. The Ocean School is a program designed to teach children about the marine environment and encourage them to become involved in conservation efforts. The aquarium also has a 3D cinema, a virtual reality exhibit, and a variety of workshops and guided tours.

Nausicaá is actively involved in research and conservation efforts, including marine animal rehabilitation and the protection of endangered species. The aquarium is committed to sustainable practices and uses renewable energy sources such as solar panels and wind turbines.