Aqua Design is the most famous aquarium in Oldenburg, Germany. It extends over a large area of more than 500 square meters. It contains 25,000 liters of sea water and 20,000 liters of fresh water, in which many types of fish and marine creatures live. The place also includes terrariums dedicated to many types of reptiles and insects such as snakes and spiders, as well as a small water pond dedicated to amphibians such as frogs. Aqua Design also offers many seminars and lectures on exciting marine life.