molluscs text index | photo index
Phylum Mollusca > Class Bivalvia
Photo index of bivalves on Singapore shores
odd-shaped clams


Heart cockle
Corculum cardissa

Razor clam
Solen brevisima

Hammer oyster
Malleus sp.

Wader tree oyster
Isognomon isognomum

Watering pot shell
Verpa penis
4-6cm. Heart-shaped, opening down the centre of the 'heart'. One side flat the other convex. Seagrass areas. Sometimes seen on our Southern shores. 1.5-5cm. Shell thin and narrow with square ends. A banded siphon on one end, strong long foot on the other. Seagrass areas. Sometimes seen on our Northern shores. 8-12cm. T-shaped shell with wavy edges. Lies freely among seagrass meadows, or stuck into crevices in rubble near reefs. Sometimes seen on some of our shores. 10-15cm long. Slightly T-shaped shell or spatula-shaped. Stuck into crevices in rubble near reefs. Sometimes seen on some of our shores. 12cm long. Tubular shell with perforations on the broader end. Sandy areas. Sometimes seen on our Northern shores.


Sea fan winged oyster
Family Pteriidae

Sponge clam
Vulsella sp.
     
4-6cm long. The shell has an asymmetrical winged-shape, like a sail boat. Attached to sea fans. Sometimes seen on our northern shores. Embedded in a living sponge with only a slit 1-2cm emerging out of the sponge. Sometimes seen on some of our southern shores..      
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Phylum Mollusca
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Class Bivalvia
all clams

  small <8cm
large >8cm
odd-shaped
stuck to a rock
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