Public Education Visit to Chek Jawa, Pulau Ubin, 19th and 20th Oct 2001, 5-7pm
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Organism Guide Sheet
phylum ARTHROPODA, class CRUSTACEA
Flower Crab
Portunus pelagicus
Widespread
Shell width to 20 cm

Thunder Crab
Myomeippe hardwicki
Widespread
Shell width to 12 cm
Purple Climber Crab
Metopograpsus sp.
Rocky shore, mangrove
Shell width to 4 cm

Shrimp
Penaeus sp.
Widespread
To about 20 cm
Porcelain Crab
Petrolisthes sp.
Rocky shore, mangrove
Shell width about 1 cm
Fiddler Crab
Uca sp.
Sand/mudflat
Shell width about 2 to 3 cm
Hermit Crab
Widespread
To about 5 cm		 Acorn Barnacle
Belanus sp.
Rocky shore, mangrove
About 1 cm across		 Volcano Barnacle
Tetraclita sp.
Rocky shore
About 3 cm across