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Seaweeds > Division Chlorophyta
Pimply green seaweed
Dictyosphaeria sp.*
Family Siphonocladaceae
updated Jan 12
Where seen? This seaweeed that looks like pimply lumps 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 AlgaeBase, there are 11 current Dictyosphaeria species.

Raffles Lighthouse, May 04
Human uses: Some species are used as human food, fed to animals and as fish bait. They are reported to have anti-microbial properties.

Raffles Lighthouse, Jun 07

Raffles Lighthouse, Jun 07

Pimply green seaweed on Singapore shores

Pulau Hantu, Apr 09

Submerged seaweed.


Pulau Biola, Dec 09

Raffles Lighthouse, May 04

Sisters Island, Jan 07

more photos of pimply green seaweed on Singapore 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.

Dictyosphaeria 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.

  Dictyosphaeria cavernosa
Dictyosphaeria intermedia

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