other cnidarians text index | photo index
Phylum Cnidaria > Class Hydrozoa
Photo index of hydroids on Singapore shores
feathery, fern-like, grass-like cnidarians

Fluffy hydroid
awaiting identification

Candy hydroid
awaiting identification

Fern hydroid
Sertularella sp.
 

Jellyfish with
thread-like tentacles
Aequorea sp.
10-15cm long densely branching with fine 'stems'. Usually bright orange. On coral rubble. Sometimes seen on some of our Northern shores. 5-10cm long with small capsules along the side branches. Pink or orange. On boulders, jetties. Commonly seen on some of our Northern shores. 10-15cm long forming a fern-like shape. Usually bright orange. On boulders and coral rubble. Sometimes seen on some of our Northern shores.   This jellyfish belongs to Class Hydrozoa. Bell about 10cm across, thin thread-like tentacles about 25cm long. Sometimes seen on our Northern shores.

Stinging hydroid
awaiting identification


Stinging hydroid
awaiting identification


Giant hydroid
awaiting identification


Seagrass hydroid
awaiting identification

 
4-20cm long. Transparent or white fern-like 'leaves' on black branches. Stings powerfully. On coral rubble. Commonly seen on some of our shores. 10-20cm long. Sparsely branched or unbranched black branches. On coral rubble. Commonly seen on Beting Bronok. 2m or longer. Unbranched feather. Usually in deeper water on our Southern shores. 0.5cm or shorter. Feathery, grows in rows on seagrass blades. Sometimes seen on some of our shores.  
Not a hydroid
       



Knobbly soft coral
Carijoa sp.



Glass branching
bryozoan

awaiting identification
     
5-8cm long with large polyps (1cm) in capsules along the side branches. White, beige, orange. On boulders, jetties. Commonly seen on some of our Northern shores. 10-20cm long. Short thick 'stems' that branch on one plane. Transparent or beige. Among seaweeds and seagrasses, also on boulders, jetties. Does not sting. Commonly seen on some of our Northern shores.      

how to tell apart animals with a ring of feathery arms
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photo index of
cnidarians on this site
Phylum Cnidaria
with soft body

solitary
  jellyfish
and jelly-like


anemones
and anemone-like

colonial
  bushy

fern-like

feathery

leathery

stick-like

thin branching
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