Lambis scorpius

Lambis scorpius, the scorpion conch or scorpion spider conch, is a species of large sea snail, a marine gastropod mollusc in the family Strombidae, the true conchs.
 * Subspecies:
 * Lambis scorpius indomaris Abbott, 1961

Description
The size of an adult shell varies between 95 mm and 220 mm.

Distribution
This species occurs in the Indian Ocean off Chagos, Madagascar,Kenya and Tanzania; in the Western Pacific and off the Philippines.