shelled snails text index | photo index
Phylum Mollusca > Order Gastropoda
Photo index of snails on Singapore shores
medium snails (2-5cm) with oval shells


Ovum cowrie
Erronea ovum

Wandering cowrie
Erronea errones

Miliaris cowrie
Erosaria miliaris

Onyx cowrie
Erronea onyx

Four-spot cowrie
Eclogavena quadrimaculata
2cm. Shell pear-shaped, with 'teeth' that are tinged yellow or orange, without spots at the front end of the shell. Under stones on rocky shores and coral rubble. Commonly seen on our Northern shores. 2-3cm. Shell cylindrical, without coloured 'teeth', with one or two brown spots at the front end of the shell. Under stones on rocky shores and coral rubble. Commonly seen on our Northern shores. 2.5-3cm. Shell pear-shaped, beige to light brown with white spots all over it. Mantle 'hairy' looking. Under rocks, on sand among seagrasses. Commonly seen on our Northern shores. 3-4cm. Shell pear-shaped, brown often with 2-3 bands of gold. Mantle black mottled with white blotches with short white projections. Coral rubble. Sometimes seen on our Northern shores. 2-3cm. Shell cylindrical, with four large triangular brown spots. On coral rubble near reefs. Sometimes seen on our Southern shores.

Pear-shaped cowrie
Erronea pyriformis

Money cowrie
Monetaria moneta

Walker's cowrie
Contradusta walkeri

Graceful cowrie
Purpuradusta gracilis

Saul's cowrie
Palmadusta saulae
About 2cm. Shell is pear-shaped. The underside is pale with small dark 'teeth'. Rarely seen. 2-3cm. Shell irregular, hexagonal with delicate ring. Rarely seen. 2-2.5cm. Shell pear-shaped, broad dark bar across the top, dark spots on the base. Shell opening is violet with short, tan 'teeth'. Rarely seen. 2.5cm. Shell pear-shaped, brown blotches at the the top, spots on the base. Rarely seen. 2.5cm. Shell cylindrical, brown blotches at the the top, spots on the base. Mantle bright orange. Rarely seen.

Bean cowrie
Family Triviidae

Soft coral false cowrie
Family Ovulidae

Abalone
Family Haliotidae
 

Cone snail

Family Conidae
About 1cm. Shell white, oval with regular parallel ridges all around including the upper side. A prominent groove along the length of the upper side, cutting across the ridges. Rarely seen. 1.5-2cm. Shell pear-shaped white. Mantle transparent with irregular brownish blotches. Found on flowery soft corals especially on our Northern shores. 4-7cm. Shell flat ear-like with a spiral of 5-10 small holes. Rocky and rubbly reefs. Sometimes seen on our northern shores.
  5-10cm. Shell heavy, conical like an ice-cream cone. But some have pointed tips or are olive-shaped. Shell opening a narrow slit. Reefs, rocky shores. Live ones rarely seen. HIGHLY DANGEROUS. Do not handle.

Weasel olive snail
Oliva mustelina

Common olive snail
Oliva oliva

Tigerish olive snail
Oliva tigridella

Orange-mouth olive snail
Oliva miniacea

Waved mitre snail
Pterygia undulosa 
2-3.5cm. Shell cylindrical, olive-shaped, conical spire. Smooth shiny beige with dark speckles or blotchy bars. Shell opening purplish brown. Sand bars and sandy areas. Commonly seen on many of our shores. 2-4.5cm. Shell cylindrical, olive-shaped, conical spire. Smooth shiny with a wide range of patterns. Shell opening pinkish. Silty sand near seagrasses. Seldom seen. 2-3.5cm. Shell cylindrical, olive-shaped, conical spire. Smooth shiny beige with darj speckles or blotchy bars. Shell opening purplish brown. Silty sand near seagrasses. Sometimes seen on our Northern shores. 4-5cm. Shell cylindrical, olive-shaped, flattened spire with short tip. Smooth shiny with zig-zag pattern and broad dark spiral. Orange coloured shell opening. Sometimes seen on some Southern shores. 2-3cm. Shell cylindrical, olive-shaped, with fine ridges. Sand among seagrasses. Seen on Changi.

Pythia snail
Phythia
sp.

Mangrove ear snail
Cassidula
sp.

Banded mangrove
ear snail

Cassidula nucleus
   
2-3cm. Shell shaped like a teardrop with a small shell opening with a flared edge. On mangrove leaves and trunks. Sometimes seen in our mangroves. 2.5-4cm. Shell thick oval, plain dark with a white rim and white mouth. On mangrove trees. Sometimes seen in our mangroves. 2-3cm. Shell thick oval, brown spiralling bands and pinkish violet mouth. On mangrove trees. Sometimes seen in our mangroves.    



photo index of
molluscs on this site
Phylum Mollusca
all molluscs

Class Gastropoda
all snails with shells

tiny <1cm

small 1-2cm
  rocks
elsewhere

medium 2-5cm
oval shell
long shell
  rocks
elsewhere
round shell
  rocks
elsewhere

large 5-8cm

very large >8cm

limpets
& other shapes
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