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Seaweeds > Division Chlorophyta > Avrainvillea species
Clustered fan green seaweed
Avrainvillea sp.*
Family Udoteaceae
updated Aug 10
Where seen? Forming clusters of flat velvety fans, this seaweed is sometimes seen on some of our shores, in coral rubble areas.

Features: Rounded or spatula-shaped blade (about 3cm wide) that is flat and not frilly or crinkled. Usually growing in clusters of 5-10 or more blades. The blade is made up of a tangle of tiny filaments that give it a velvety texture. Usually olive green to dark green.

According to AlgaeBase there are more than 30 current Avrainvillea species.

Sometimes confused with Solitary fan green seaweed (Avrainvillea erecta) which is not found in clusters. The Frilly fan green seaweed (Udotea sp.) has frilly blades.

Sentosa, Jun 05

Tanah Merah, May 11

Pulau Pawai, Dec 09

Clustered fan green seaweed on Singapore shores

Labrador, Apr 10

Pulau Tekukor, May 10

Beting Bronok, Aug 05


Terumbu Pempang Tengah, May 11

*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of display.

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