Seopseom Jejigi섶섬 제지기

At a glance

Item	Details
Main depth	Pinnacle tops around 13 m; recent routes reach 27-29 m
Terrain	North-south reef line with multiple pinnacles and channels
Highlights	Soft corals, large soft corals, and fish gathering along the structure
Recent conditions	Water temperature 17-20 degrees C, visibility about 8 m
Dive style	Pinnacle boat dive timed for slack water

What makes it special

On Seopseom's eastern side, a long reef line creates pinnacles and channels. Moving between the underwater peaks feels like travelling through a submerged mountain range, while large soft corals decorate the rock.

Fish often gather along the structure. Large jabarri grouper have been recorded, but are not guaranteed, so treat the pinnacles and overall reef landscape as the dependable attraction.

Dive guide

• Surface current can be strong; operators often schedule the dive for the short slack-water window.
• If a descent line is used, stay with your buddy and leave it only when the team is ready.
• Agree on maximum depth, minimum gas, and ascent line before entering the deep pinnacles.
• A stronger-than-expected current may shorten the route or change the site.