This is one of the most beautiful buildings in Biarritz and one of the best aquariums in the world. It was inaugurated in 1935 and it is an Art Déco piece of art. Its main aim is to show the ocean in all its forms. Your visit begins in the aquariums where you can appreciate conger eels, octopuses, seahorses and a multitude of other species, all in a magical atmosphere. There is a beautiful gallery o skeletons and reconstructed models of cetaceans,whales, killer whales and dolphins. You also have the underwater seal observatory as well as the terrace where you can see them resting or being feed at specific hours. The variety is huge, so take your time or go one night..it is the perfect hour to visit this fantastic place.