The National Marine Science Museum Underwater Observatory in Uljin is a facility at the end of the 393m Baramajung Trail where visitors watch sea life. An elevator descends to a depth of 7m, and fish, pufferfish and sea hares are visible in real time through the glass windows. Admission and viewing are free, and the site also includes a VR and experience area on the first floor, marine exhibitions on the second floor, and an outdoor playground and maze. When algae grows on the glass walls, the underwater view is not clear.