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


Varicose phyllid
nudibranch

Phyllidia varicosa

Black phyllid
nudibranch

Phyllidia nigra

Pimply phyllid
nudibranch

Phyllidia pustolosa

Eyed phyllid
nudibranch

Phyllidia ocellata
 
4-5 cm. Body hard, with 3-6 ridges of bumps that are blue-grey where they join the body and tipped yellow. Rhinophores yellow. A black stripe along the foot. On coral rubble. Sometimes seen on some of our Southern shores. 4-5 cm. Body hard with evenly distributed bumps (not clustered or in ridges). Bumps tall and pink to red near the ends, but black where they join the body. Rhinophores black. On coral rubble. Commonly seen on our southern shores. 4-5 cm. Body hard with coloured bumps that are clustered in groups, the black areas do not form distinct lines or patterns. Rhinophores black. On coral rubble. Sometimes seen on our Southern shores. About 5 cm. Body hard with white bumps on a yellow body, some bumps with dark circles. Rhinophores yellow. On coral rubble. Uncommon on the intertidal, sometimes seen on our Southern shores.  
 

Smooth little onch slug
awaiting identification

Big pimply onch slug
awaiting identification

Grey-footed onch slug
Platyvindex
sp.

Ornate onch slug
awaiting identification
 
1-3cm. Body long, rounded smooth with tiny bumps. Underside whitish with broad foot. Shady seaweed-covered rocks and sea walls. Commonly seen on many of our shores. 4-5cm. Body hard, broad and flat with a raised hump along the centre length. Underside greenish or bluish with narrow foot. Rocky shores and seawalls. Commonly seen on many of our shores. 2-3cm. Body circular or long with small bumps arranged in concentric circles. Grey underside and narrow, ridged foot. On mangrove trees. Sometimes seen in our mangroves. 3-5cm. Body oval, rounded with ornate texture of bumps with blunt spikes. Underside pale to lemon yellow. Sometimes seen in our mangroves.  



Long onch slug
awaiting identification



Orange-footed onch slug
Onchidium griseum
     
2-3cm. Body long, rounded.with regular bumps, sometimes spots. Underside and narrow foot white. Mangrove trees, at night. Sometimes seen on some of our shores. 4-5cm. Body long with ridges and small bumps. Mottled underside with yellow or orange margin. The narrow foot is orange. On mangrove trees. Sometimes seen in our mangroves.      

These are NOT sea slugs

Hoof-shield limpet
Phylum Mollusca

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
links | references | about | email Ria
Spot errors? Have a question? Want to share your sightings? email Ria I'll be glad to hear from you!
wildfactsheets website©ria tan 2008