Net Olive, Reticulated Olive
Phylum: Mollusca, Class: Gastropoda, Order: Neogastropoda, Family: Olividae, Genus: Oliva, Species: Oliva reticulata · Olividae (Olive family) · Gastropod (univalve), whole shell, cylindrical or oval-elongate shape
Species
Oliva reticulata
Shell Type
Gastropod (univalve), whole shell, cylindrical or oval-elongate shape
Family
Olividae (Olive family)
Size
Approximately 1 inch (25 mm), which is typical for smaller specimens or juveniles, though adults of this species commonly range up to 1.5 to 2 inches (35-50 mm).
Color & Pattern
Glossy cream to white base heavily overlaid with a distinct net-like or tented pattern of brown, reddish-brown, or yellowish-brown reticulations. The colors appear completely natural and retain a high-gloss, porcelain-like shine typical of fresh live-collected or well-preserved olive shells.
Rarity
Common to Uncommon, frequently found by dedicated beachcombers and snorkelers across its native Indo-Pacific range, but prized for its crisp net pattern.
Habitat
Found in shallow subtidal waters, typically on intertidal sand flats, sand bars, and shallow sandy bottoms near coral reefs or seagrass beds down to moderate depths.
Geographic Range
Indo-West Pacific region, ranging from the eastern coast of Africa and the Red Sea across through Southeast Asia, Indonesia, to northern Australia and Polynesia.
Description
A classic, highly polished olive shell exhibiting a sleek, streamlined cylindrical form designed for burrowing rapidly through sand. The surface is adorned with an intricate, lace-like network of brown zig-zags and tent-like markings resembling a fishnet. It features a narrow, deep aperture and a distinctive channeled suture separating the whorls.
Key Features
Distinguished by its glossy surface, cylindrical body whorl, deep and narrow vertical aperture, notched base, and the characteristic reticulated net pattern covering the exterior.
Collector Value
Moderately low to moderate value. While common, specimens with exceptionally crisp, dark reticulations and high gloss are popular among shell enthusiasts and beginners building an Indo-Pacific representative collection. Typically valued from a few dollars to up to fifteen dollars depending on size and pattern perfection.
Condition Notes
The specimen appears to be in excellent, highly collectable condition, retaining its natural glossy sheen with minimal to no visible beach wear, chipping, or fading. Grade: Fine to Gem.
Interesting Facts
Olive shells are active predatory and scavenging gastropods that spend much of their time buried beneath the sand, detecting prey using a specialized sensory siphon while leaving only their trails visible. In many coastal cultures, polished olive shells have historically been strung together to create intricate shell money, necklaces, and traditional ornaments.
Ecological Role
Functions as a benthic predator and scavenger, playing an important role in marine sandflat ecosystems by consuming detritus, small crustaceans, and other dead or dying organisms, thereby helping to keep the substrate clean.
Similar Species
Oliva porphyria (Tent Olive) - distinguished by much larger size and distinct tent-like markings; Oliva vidua - features darker overall coloration with a prominent white band; Oliva oliva - generally smaller with less distinct patterning.
Beach Finding Tips
Search shallow sandy lagoons, sandbars during extremely low tides, or sift through fine sand near the edge of reef flats in the Indo-Pacific region. Look closely for the distinct crawl tracks left in the sand where the living animal has moved just beneath the surface.