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Seaweeds > Division Rhodophyta
Prickly red seaweed
Hypnea sp. *
Family Cystocloniaceae
updated Aug 10
Where seen? This finely branched seaweed is sometimes seasonally common on our undisturbed Southern shores.

Features: Bunches of fleshy 'stems' with lots of side branches. Some have short 'stems' (3-6cm) covered with lots of tiny pointed projections that give a prickly look. These may carpet small areas of coral rubble. Others have longer stems (10-15cm) and form tangled bunches. Colours range from beige, pink, reddish or brownish.

Bluish ones with thicker stems that form spiky balls is probably Hypnea pannosa.

According to AlgaeBase: there are more than 50 current Hypnea species.

Human uses: In some places, Hypnea seaweeds are fed to livestock and eaten by people.

Chek Jawa, Oct 08


Spiky ball seaweed (Hypnea pannosa)?
Pulau Hantu, Aug 04

Pulau Hantu, Mar 06

Pulau Semakau, Sep 05

b

Prickly red seaweeds on Singapore shores


Terumbu Raya, May 10

Pulau Hantu, Apr 06

Labrador, Feb 06


Pulau Salu, Aug 10

more photos of prickly red seaweed on Singapore shores
northern shores
southern shores part 1 | part 2 | part 3


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

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

  Hypnea caespitosa
Hypnea esperi
Hypnea musciformis
Hypnea pannosa
Hypnea spinella

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