You can encounter approximately 20,000 creatures of marine life of about 500 kinds here. Among various facilities here, particularly popular is the Penguin Village, one of Japan's largest facilities for exhibiting penguins. A must-see event is Penguins in Formation, where you can observe penguins swimming as if they were flying in the sky. Various other pleasant events are also held constantly, including hands-on experience events where you can touch creatures. This aquarium also features exhibits unique to Shimonoseki, including a tank representing the currents of the Kanmon Strait, and an exhibition of more than 100 kinds of puffer fish from around the world.