This seaweeed with a pimply or bubbly texture is sometimes seen on some
of our Southern shores, growing on coral rubble. It forms small scattered
patches among other encrusting organisms.
Features: Small clusters (5-7cm)
of hollow irregular globular lumps (1-2cm). Made up of a layer of
tiny spheres joined together. This is the seaweed's mature form, resulting
from an unusual form of division, when it produces a mass of tiny
spheres. Immature forms may be firm, irregularly shaped and generally
globular. Bright green to bluish green.
According to Marine
Algae of Hawai`i the bubble-like structure of this seaweed allows
it to efficiently trap nutrient-laden sediments in the chambers. The
seaweed then slowly taps on this nutrient store.
According to AlgaeBase,
there are 11 current Dictyosphaeria species.
Human uses: Some species are used
as human food, fed to animals and as fish bait. They are reported
to have anti-microbial properties. Although it is well behaved in
Singapore, when this seaweed grows outside its natural range as an
invasive alien, it can grow rapidly in carpets, replacing corals and
seriously affecting reefs.
*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 seaweed on Singapore shores
species 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.
- 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.
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.