Home > Invertebrates > Shells > Strombs > Lambis truncata sebae

Updated 8/18/2025

Family Strombidae

TROPICAL PACIFIC

Lambis truncata sebae


Opunohu Bay, Mo'orea, 5 feet

  
   

PACIFIC GIANT SPIDER CONCH

Common on sandy rubble on shallow reef flats.  Attains 16.5 inches, 420mm.  Indonesia to the Society Islands.  Shells exist in fossilized reefs above sea level in Hawaii, along with Harpago chiragra.  Lambis truncata truncata is the Indian Ocean form, and Lambis truncata sowerbyi is a hybrid between Lambis truncata sebae and Lambis lambis.