green seaweeds text index | photo index
Seaweeds > Division Chlorophyta
'Bee hoon' green seaweed
Chaetomorpha sp.*
Family Cladophoraceae
updated Aug 10
Where seen? This green seaweed does look like our local noodle favourite, 'bee hoon' (vermicelli)! It is seen on many of our shores, growing entangled among seagrasses or other seaweeds. It 'blooms' seasonally, sometimes drifting up on the shores in large tangled bundles.

Features: Filaments fine, long (40cm or more) and unbranched that grow entangled among other seaweeds. Each filament is made up of a single row of cylindrical cells joined together end to end. The cells are longer than they are wide: thus the filament resembles bamboo when seen under a microscope. Bright light green to dark green, sometimes olive green.

Chaetomorpha gracilis forms a bright green mossy carpet under mangrove trees!

According to AlgaeBase, there are more than 50 current Chaetomorpha species.

Sometimes confused with Hairy green seaweed (Bryopsis sp.) which has much shorter filaments and appears feathery. Here's more on how to tell apart some green seaweeds.

Human uses: It is used as animal feed and eaten raw by people.

Large piles of the seaweed
Chek Jawa, Feb 02

Chek Jawa, Feb 02

Sentosa, Jan 06

Chaetomorpha gracilis forms
a mossy carpet under mangrove trees.

Kranji Nature Trail, Apr 10

Bee hoon green seaweeds on Singapore shores

Raffles Lighthouse, Jul 06

Sentosa, Jun 05

Pulau Semakau, May 08

more photos of bee hoon green seaweeds on Singapore shores
northern shores
southern shores part 1 | part 2 | part 3


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

Acrocystis recorded for Singapore
Pham, M. N., H. T. W. Tan, S. Mitrovic & H. H. T. Yeo, 2011. A Checklist of the Algae of Singapore.

  Chaetomorpha aerea
Chaetomorpha antennina
Chaetomorpha gracilis
Chaetomorpha indica
Chaetomorpha ligustica
Chaetomorpha linum
Chaetomorpha spiralis

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