| Lambis, Lambis lambis, Lambis scorpius, Lambis crocata, Harpago chiragra|
Lambis truncata, common name the giant spider conch, is a species of sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.
Subspecies of Lambis truncata include:Lambis truncata truncata (Humphrey, 1786)
Lambis truncata sebae (Kiener, 1843)
Lambis truncata truncata has a flat apex, while the apex of Lambis truncata sebae is more pointed.
Lambis truncata is the largest and heaviest of spider shells, up to 40 cm. Lambis truncata is similar to Lambis lambis but with a more squarish outline. Younger shells are creamy white; columella and lip usually mauve brown when older.
The distribution of Lambis truncata includes the Indian Ocean off Aldabra, Chagos, Madagascar, Mauritius, Tanzania; the Bay of Bengal and in the Pacific Ocean along the Philippines.
Lambis truncata lives on rubble and coarse sand in shallow water.
Lambis truncata Wikipedia