Florent's Guide To The

Tropical Reefs

Slender Sapsucking Slug
Thuridilla bayeri
Slender Sapsucking Slug
Category: Sap-Sucking Slugs
Scientific Name: Thuridilla bayeri
Size: Up to 2 in. (to 5 cm)  
Depth: 3-50 ft. (1-15 m)
Distribution: Indo-West Pacific
Note: This is likely a complex of species
Mollusca (Phylum)
└Gastropoda (Class)
 └Heterobranchia (Subclass)
  └Euthyneura (Infraclass)
   └Sacoglossa (Superorder)
    └Plakobranchidae (Family)
     └Thuridilla (Genus)

Sea Slugs
Sap-Sucking Slugs

Slender Sapsucking Slug

Yellow-Spotted Thuridilla

Orange-Edged Sapsucking Slug

Painted Elysia

Splendid Sapsucking Slug

Leaf Sheep

Purple-Tipped Costasiella

Deceptive Costasiella

Elegant Sapsucking Slug

Dark-Dotted Mourgona

Lettuce Sea Slug

Orangemargin Elysia

Ornate Elysia

Ringed Sap-Sucking Slug

White-Bump Thuridilla



All Photographs
© 2025 Florent Charpin