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Seaweeds > Division Rhodophyta > Crunchy pom-pom red seaweeds
Slender crunchy pom-pom red seaweed
Family Corallinaceae

updated Oct 2016

Where seen? These pinkish crunchy pom-poms are seen on both our Northern and Southern shores, growing in clusters on rubble near living reefs, densely on abandoned ropes, sometimes a tangled layer among seagrasses forming a crunchy carpet that covers a large area. Smaller Jania species may grow on seagrasses and seaweeds.

Features: A cluster (3-6cm) of many stiff, slender, cylindrical 'stems' that are regularly branched. The 'stem' tips often with a white rounded 'cap'. The cluster may be a spherical bushy shape densely packed or rather loose. The seaweed incorporates calcium carbonate making the 'stems' hard and brittle. Colours pink, dark pink and purple.

Besides Jania species, seaweed recorded for Singapore that look like Slender crunchy pom-pom red seaweeds include Amphiroa fragilissima.

May be confused with other pinkish seaweeds with a pom pom shape.

Pulau Sekudu, Jul 09

White rounded 'caps' at the tips.

Loose bunches growing among seagrasses.
Changi, Apr 12

Growing on an abandoned rope.
Changi, May 11

Loose tangles growing among seagrasses.
Cyrene Reef, Apr 08

Chek Jawa, May 05

Labrador, Jun 05

Sentosa, Jul 05

*Seaweed species are difficult to positively identify without microscopic examination.
On this website, they are grouped by external features for convenience of display.

Slender crunchy pom-pom red seaweeds on Singapore shores

Photos of Slender crunchy pom-pom red seaweeds for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map

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

  Jania adhaerens
Jania capillacea
Jania verrucosa

Links References
  • 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].
  • Huisman, John M. 2000. Marine Plants of Australia University of Western Australia Press. 300pp.
  • Calumpong, 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.
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