Built in the USA, this tunnel was the first of its kind in Europe. The tank contains nearly 300,000 litres of seawater. A diver regularly enters the aquarium to make sure the methacrylate is kept in a good state and to feed the 200 specimens that live here. Some fish, such as the rays and sharks, feed on the bottom: so they need special attention from staff and to be fed one by one.

This completely transparent tunnel will lead you to the middle of the ocean amidst winged rays and groupers. The aquarium gives you a magnificent view into this silent world. The aquarium's inhabitants are hand fed by a diver. This takes places several times a week and is eagerly awaited not only by the fish but also by the visitors.