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Marine life · Coral

Sea Fan

Sea Fan · Gorgonian

Gorgonian coral polyp — species identification unknown (no definitive claim)

A branching coral polyp (gorgonian) that spreads out in a fan shape. It attaches to current-swept offshore walls and rock, epitomizing the cold, deep offshore environment of Ulleung·Dokdo.

Some gorgonians = protected marine speciesSpecies ID unknown · verify
01Species · Profile

Fan-shaped colonies on offshore walls

A branching coral polyp (gorgonian) that spreads in a fan shape. It grows attached to current-swept offshore walls and rock, forming colonies alongside black coral on high-visibility walls. The species is unidentified.

02Habitat · Season

Ulleung·Dokdo high-visibility walls

A sessile organism that epitomizes the cold, deep offshore walls and rock of Ulleung·Dokdo. On current-swept walls with 20–40 m visibility, it blends with black-coral colonies.

Ulleung·Dokdo offshoreVisibility 20–40 m
20–40 m
Offshore high-visibility walls · Gorgonian
03Where you usually see it

Where to encounter the sea fan

Verified

Jukdo

Ulleung·Dokdo

Sea-fan & black-coral (baeksong) colonies (✅).

Aggregated

Ssangjeongcho

Ulleung·Dokdo

Sessile-life colonies underwater (🟡 aggregated).

04Protection · Caution
Some gorgonians = protected marine species · species ID unknown

Some gorgonian corals are designated as protected marine species, but because this ‘sea fan’ is not identified to species, whether the individual species is protected needs to be verified (verify needed). Avoid contact while diving.

Verify needed · no definitive claim
  • The ‘sea fan’ is unidentified to species — do not assert whether it is a protected species such as the blunt gorgonian (dunhan-jinchong-sanho).

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