7 photos - 4 species


Casmaria ponderosa

Heavy bonnet

Maximum length: 7 cm

Found on coral rubble and rocks covered with algae.

Lembeh Strait North Sulawesi


Cassis cornuta

Hornet helmet, Giant helmet or Helmet shell

Maximum length: 40 cm

The largest species of the family.

Common on sand.

Photos 1 - 2: Bangka Island North Sulawesi

Photo 3: Lembeh Strait North Sulawesi


Cassis tuberosa

King helmet

Maximum size: 20 cm

Moalboal Philippines


Semicassis bisulcata

Japanese bonnet or Globular helmet

Maximum size: 7 cm

It feeds on sea urchins.

The colour of its body is white, pink, pale grey or cream with 4 - 5 bands of brown spots.

It lives on sandy bottoms in shallow waters.

Bangka Island North Sulawesi