This spongy, velvety green seaweed is sometimes seen on our Southern
shores. Branching forms sometimes blooms among seagrasses
near reefs, e.g., at Pulau Semakau.
Features: Spongy but firm, texture velvety smooth.
Commonly seen on the intertidal is Codium geppiorum which forms a cluster
of thick, cylindrical 'stems' (6-8 cm) with rounded, knobbly tips. May be a compact ball of short branches, or a looser clump of longer
branches. Colour olive green to dark green.
Others, like Codium
arabicum, forms encrusting layers on hard surfaces, often forming blobs with folds. Colour black or dark green
According to AlgaeBase,
there are more than 140 current Codium species.
Lumpy blobby Codium green seaweed may be confused with Puffy brown seaweed (Colpomenia sinuosa) which is golden brown.
Role in the habitat: Some Codium
species are eaten by sea
Invasive Codium: Some species
of Codium are considered invasive alien introduced species
in temperate shores. As these invasive Codium species take
root, they displace the native kelp seaweeds and the marine life associated
with these seaweeds. These invasive species are believed to have been
introduced via attachment to ship hulls, or oyster shells, as fouling
organisms in drag nets and packing material for fishery products.
Human uses: Some species are used
as animal feed and eaten by people. In Korea, they are harvested fresh
from the wild and sold in local markets. They are also used as insect
repellant. They are reported to have anti-bacterial and anti-tumor
Berkas, Jan 10
Photo shared by Loh Kok Sheng on his
Dec 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
green seaweeds on Singapore shores
recorded for Singapore
Pham, M. N.,
H. T. W. Tan, S. Mitrovic & H. H. T. Yeo, 2011. A Checklist of
the Algae of Singapore.
- Lee Ai Chin, Iris U. Baula, Lilibeth N. Miranda and Sin Tsai Min ; editors: Sin Tsai Min and Wang Luan Keng, A photographic guide to the marine algae of Singapore, 2015. Tropical Marine Science Institute, 201 pp.
- Pham, M.
N., H. T. W. Tan, S. Mitrovic & H. H. T. Yeo, 2011. A
Checklist of the Algae of Singapore, 2nd Edition. Lee Kong Chian Natural History Museum, National University of Singapore,
Singapore. 99 pp. Uploaded 1 October 2011. [PDF, 1.58 MB].
John M. 2000. Marine
Plants of Australia University of Western Australia Press. 300pp.
H. P. & Menez, E. G., 1997.Field
Guide to the Common Mangroves, Seagrasses and Algae of the Philippines.
Bookmark, Inc., the Philippines. 197 pp.
- Trono, Gavino.
C. Jr., 1997. Field
Guide and Atlas of the Seaweed Resources of the Philippines..
Bookmark, Inc., the Philippines. 306 pp.