molluscs text index | photo index
Phylum Mollusca > Class Gastropod > sea slugs
Photo index of sea slugs on Singapore shores
slugs with external shell


Singapore bivalve slug
Berthelinia singaporensis

Tendril slug
Lobiger viridis

Volvatella slug
Volvatella
sp.

Paper bubble snail
Haminoea
sp.
0.5-1cm. A pair of 'shells' the slender slug emerging betweeen them. On Caulerpa seaweeds. Hard to spot. Sometimes seen on our shores. 1cm. Thin oval shell, body larger than the shell. May produce a purple secretion when disturbed. Silty areas near seagrasses. Sometimes seen on our shores. About 3cm. Thin oval shell, green. With four long 'tendrils' sticking out the sides of its body. Among seagrasses. Seen only once on Changi. About 1cm. Thin, weak shell, rounded rhinophores, oral lobes and short foot. Usually orange or yellow. Among caulerpa seaweeds. Sometimes seen on some of our shores. 1-4cm. Thin oval shell, body larger than the shell. Sometimes seen on our shores.

These are NOT sea slugs

Hoof-shield limpet
Phylum Mollusca

Cowries
Phylum Mollusca
Family Cypraeidae

Chiton
Order Polyplacophora
   
2-3cm. Body much larger than small narrow shell. Body in various colours from black, beige to white. Under stones. Commonly seen on our Northern shores. Small snails which cover their shells with fleshy body mantle, often with 'hairy' projections. 3mm-10cm. Oval body with 8 overlapping plates along the centre. Found on hard surfaces: rocks, shells. Sometimes seen on some of our shores.    

how to tell apart



photo index of
molluscs on this site
Phylum Mollusca
all molluscs

sea slugs

external gills
body features
  small <5cm
large >5cm
very large >10cm

no external gills
body features
  two flaps
with bumps
hairy
smooth
external shell
others
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