molluscs text index | photo index
Phylum Mollusca > Class Gastropod > sea slugs
Photo index of sea slugs on Singapore shores
slugs without external gills
body with tendrils, etc


Bushy slug
Polybranchia orientalis

Notobryon nudibranch
Notobryon sp.

Sargassum nudibranch
Crosslandia sp.

Tendril slug
Lobiger viridis
4-5cm. Lots of large leaf-like extensions that drop off easily when the animal is handled. Among seaweeds. Sometimes seen on our Northern shores. 1-3cm long. Body long, narrow, cylindrical. Star-shaped oral tentacles near its mouth. Gills are protected in sheaths along the body. Near reefs. Sometimes seen on our Southern shores. About 3cm long. It has a pair of 'flaps' (mantle lobes) in the middle of the body. Rhinophores tiny, brush-like and at the tip of a huge rhinophore stalk. Near reefs. Seen only once on Sisters Islands. About 3cm long. It has a pair of 'flaps' (mantle lobes) in the middle of the body. Rhinophores tiny, brush-like and at the tip of a huge rhinophore stalk. Along the sides of the body it has a few bright blue spots and white spikes. Seen among Sargassum seaweeds. About 3cm. One pair of tentacles. Has a green shell and four long 'tendrils' sticking out the sides of its body. On Caulerpa seaweeds. Hard to spot. Seen only once on Changi.

Melibe nudibranch
Melibe viridis
       
6-12cm long. Soft body with about 8 large lobes arranged in two rows along the body length. Has an expandable hood. Among seagrasses on Cyrene Reefs.        

This is NOT a sea slug

Cowries
Phylum Mollusca
Family Cypraeidae
       

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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