Sungsunaegi is a reef site located off the coast of Uljin, South Korea, requiring boat access. The reef structure slopes into depths ranging from 19 to 22 metres, with an average depth of 20 metres. Divers encounter mild currents, though visibility is variable, typically ranging between 5 and 10 metres. Due to the depth and fluctuating visibility, this site is suited for intermediate divers. Water temperatures vary significantly throughout the year, ranging from 12 to 22 degrees Celsius, necessitating careful selection of exposure protection. Divers should remain vigilant regarding jellyfish and surface boat traffic during entry and exit procedures.

Flower Garden is a boat-access reef located off the coast of Uljin, South Korea. The site features a reef structure situated at depths between 20 and 23 metres, with a rapid drop-off descending to 40 metres. Divers can expect visibility ranging from 20 to 40 metres. Conditions include moderate currents that may strengthen with little warning, and the site is subject to surf. Due to the potential for strong currents and the open water environment, this site is suited for intermediate divers. Air fills and guided tours are available locally to assist with navigation and safety.

The Nagok Wreck is a shipwreck site located off the coast of Uljin, South Korea, featuring a combination of wreck structure and reef topography. Divers can explore the site at depths between 22 and 25 metres. Conditions are generally manageable, with mild currents and visibility typically ranging from 5 to 10 metres. Access to the site is by boat only, requiring prior charter arrangements. Water temperatures fluctuate seasonally between 12 and 21 degrees Celsius, necessitating appropriate thermal protection such as a thick wetsuit or drysuit. Divers should maintain awareness of boat traffic and deploy a surface marker buoy throughout the dive for safety.

The Buk-myeon Wreck is a submerged vessel located off the coast of Uljin, South Korea. Resting at depths between 20 and 24 metres, the site is suited for intermediate divers. Access is exclusively by boat. Visibility at the site is variable, typically ranging from 5 to 10 metres, and currents are generally mild. Due to the potential for low visibility and the nature of the structure, divers should exercise caution regarding entanglement and maintain good buoyancy control. Carrying a torch is recommended to assist with navigation and detail observation around the wreck. There are no confirmed amenities at this remote location.