This is the Pacific Common Olive (Oliva miniacea), a marine gastropod mollusc in the family Olividae. Recognisable by its smooth, glossy, elongated shell with a very long aperture and a notably low spire; the shell typically measures between approximately 45 mm and 100 mm in length and features a distinct filament channel groove.

Location:
Indo-Pacific region – including the Indian Ocean (off Chagos, Mascarene Basin, Mauritius) and parts of the Western Pacific and Andaman Sea. Found in shallow marine environments, often in sandy or subtidal zones. Typical depth range isn’t deeply documented but generally occurs in shallow subtidal waters.

Average Size:
Shell length ranges from roughly 45 mm to 100 mm.

Family:
Olividae (Olive snails)

Species:
Oliva miniacea

Ecological Role:
A nocturnal, burrowing carnivorous snail that feeds on small invertebrates and organic material; often leaves characteristic trails as it burrows into sand.

Reproduction:
Non-broadcast spawner; developmental cycle omits a free-swimming trochophore stage, indicating direct development within egg capsules.

Conservation Status:
Not evaluated by the IUCN and not considered threatened. Commonly collected for its attractive shell, with limited data on population trends.