One of the best in the country, this aquarium has three underground levels and an outdoor park, located on the edge of Haeundae Beach. It contains over 35,000 varieties of fish, algae, amphibians, and reptiles. The highlight is on the bottom level, where there is a main tank and tunnel where you can walk through the water, while fish and shark swim above you. There is an additional W4,000 fee to go through the underwater simulation.