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Seaweeds > Division Chlorophyta > Family Caulerpaceae > genus Caulerpa
Scalpel feathery green seaweed
Caulerpa scalpelliformis*
Family Caulerpaceae
updated Aug 10

Where seen? This feathery green seaweed is commonly seen on our Northern shores, growing on sandy bottoms, often on mounds of sand and sometimes on hard surfaces. It is seasonally abundant, and can cover large areas when it is in 'bloom'. Small patches sometimes seen on our Southern shores.

Features: A feather-like structure 5-6cm long. The mid-rib or central 'stem' of the feathery structure is flat and usually with a width wider or the same as the length of the side 'branches'. The side 'branches' are short, flat and have rounded to bluntly pointed tips. These little feathery structures emerge along the length of a 'stem' that creeps over hard surfaces or just under the sand.
Colours generally dull green.

Sometimes confused with other feathery green seaweeds or with seagrasses. Here's more on how to tell apart different feathery green seaweeds and how to tell apart feathery green seaweeds and seagrasses.

A bloom of this seaweed sometimes
covers large areas of the shore.

Chek Jawa, Aug 07

Changi, Apr 05

Changi, May 05

Chek Jawa, Aug 07

Scalpel feathery green seaweeds on Singapore shores

Pulau Sekudu, Sep 07

Chek Jawa, Aug 05

Labrador, May 06


Tanah Merah, Aug 09

Sentosa, Apr 09

Sentosa, Mar 09

*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.

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