12 photos - 7 species

Aliger gigas

Queen conch or Pink conch


 Size: 15 - 30 cm

Depth: 1 - 30 m

Large shell, with a short conical tip and blunt nodes, often overgrown.

Long eyestalks, eyes at the tip.

Photo 1 Astrid: Bonaire Caribbean

Photos 2 - 3 Johnny: Bonaire Caribbean

Canarium mutabile

Variable stromp or Flower stromp

 Maximum length: 45 mm

They are often found in large numbers in lagoons,

from the intertidal zone to approx. 20 m on sand, rubble or hard reef substrates,

as well as between Halimeda algae.

The shells are often whitish, some are very heavily pigmented.

This winged snail feeds on algae growth and detritus.

Photo 1 Johnny: Bangka Island North - Sulawesi

Canarium sp.

Canarium sp

 Maximum length: ?

Unfortunately I cannot provide a description of this species as not much is known about it.

This specimen, which I photographed in Indonesia, had a length of about 6 cm.

Photo 1 Johnny: Bangka Island North Sulawesi

Euprotomus vomer 

Vomer conch

 Maximum length: 15 cm

Relatively rare species.

Cream-colored body, irregular brown spots, very thick lip with brown stripes

and dark purple inside.

On sandy bottoms in reefs.

Photos 1 - 2 Johnny: Lembeh - Strait North Sulawesi

Harpago chiragra

Chiagra spider conch or Gouty spider conch

Maximum length: 260 mm

Harpago chiragra is often referred to colloquially as the Chiragra spider snail - boat hook.

It lives on sandy bottoms between the lagoons and the reef.

Diet: algae.

It cannot be easily turned over by potential predators,

as the widened mouth of the snail enables a stable position.

It is always visible on top of the sand.

The shell alone reaches a length of approx. 17 cm.

Photo 1 Johnny: Bangka Island North - Sulawesi

Lambis scorpius

Scorpio spider conch

 Maximum length: 22 cm

These species can only be distinguished by the arrangement of the spines and the shell.

Photos 1 - 2 Johnny: Bangka Island North Sulawesi

Lambis truncata sebae

Giant spider conch

 Maximum length: 18 cm

Common in shallow water on coral sand and in lagoons.

Smooth opening, small shoulder knot.

Females have longer “fingers” at the opening than males.

Photos 1 - 2 Johnny: Hurghada Egypt