Blue
sea fan
awaiting identification
updated May 2025
Where
seen? This sea fan with bright blue polyps is sometimes seen on our Northern shores. On rocks and coral rubble near the low
water mark.
Features: 15-20cm tall. Colony
with long stems without much side branching. Stem white or pinkish, cylindrical
with rounded tips, all stems about the same diameter. Bright blue polyps are relatively large (0.5cm) and
emerge all around the stem. The polyp can retract completely
into the stem, leaving a blue spot on the stem. |

Changi, May 06
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Polyps fully retracted into the stem.
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Polyps fully retracted into the stem.
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Pulau Sekudu, May 25
Photo shared by Loh Kok Sheng on facebook. |
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*Species
are difficult to positively identify without close examination.
On this website, they are grouped by external
features for convenience of display
Blue
sea fans on Singapore shores |
Other sightings on Singapore shores |

Changi-Loyang, Apr 25
Photo shared by Kelvin Yong on facebook. |
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