[2] The COEX Aquarium features 90 exhibition tanks grouped in fourteen "discovery zones",[1] including six themed areas.

Each exhibit features a dedicated aquarium tank where visitors can view species of fish indigenous to the theme location.

The aquarium also features exhibits detailing the local Korean river ecosystems.

[1] The COEX Aquarium also features several smaller exhibits, many with a focus on entertaining children.

One such exhibit, titled "Wonderland", contains a collection of "eccentric fish tanks" including a shower cubicle, computer monitor, bath tub, and toilet bowl.