Meleagris Cowrie (also known as the Black Spotted Cowrie)
Phylum: Mollusca, Class: Gastropoda, Order: Littorinimorpha, Family: Cypraeidae, Genus: Mauritia, Species: Mauritia mauritiana · Cypraeidae (Cowrie family) · Gastropod (snail/univalve), whole shell, smooth and ovate spiral shape
Species
Cypraea tigris (specifically the form or variety often associated with dark/spotted variants, though typical tigris differs, this specimen closely aligns with Erosaria or Leporicypraea; let's correct to the classic Mauritius/Tigris group or specifically Mauritia scurra/Tigris variant, or more accurately Mauritia mauritiana / Mauritia histrio)
Shell Type
Gastropod (snail/univalve), whole shell, smooth and ovate spiral shape
Family
Cypraeidae (Cowrie family)
Size
Approximately 2.5 to 3 inches in length, which is average for this species. Adults typically range from 2 to 4.5 inches.
Color & Pattern
Rich dark brown to chocolate-black base color densely covered with numerous rounded, light cream to white spots and reticulated patterns across the dorsum. The margins and base are heavily darkened with deep brown. The gloss is naturally high and vitreous, giving it a polished appearance.
Rarity
Common to Uncommon, frequently collected by snorkelers and divers throughout its range, though pristine live-collected specimens are more valued.
Habitat
Found in shallow tropical marine waters, typically living under heavy coral boulders, in crevices, and on outer reef flats at depths ranging from the intertidal zone down to about 20 meters.
Geographic Range
Indo-West Pacific region, ranging from the East African coast across the Indian Ocean to the central Pacific islands.
Description
An exceptionally smooth, heavy, and robust cowrie shell with a domed dorsal surface and a flat base. The aperture is narrow and lined with strong, tooth-like ridges on both the outer and inner lips. The intricate network of white spots stands out sharply against the deep chocolate-brown background, creating a high-contrast, striking appearance.
Key Features
Heavy, ovate form with a flattened base, prominent teeth along both sides of the narrow aperture, and a distinctive dark brown background densely packed with rounded pale spots.
Collector Value
Moderately high for top-grade, high-gloss specimens with deep coloration. Common in shell shops, but prized by beginner and intermediate collectors for its striking beauty.
Condition Notes
Gem to Fine condition. The shell exhibits a glossy, undamaged natural finish with no significant fading, cracks, or boring marks. The margins and teeth are sharp and intact.
Interesting Facts
Cowries were historically used as a form of currency across parts of Africa and Asia. The living animal possesses a mantle that covers the shell to keep it polished and free of algae.
Ecological Role
Nocturnal herbivores that graze primarily on algae growing on coral reefs. They play an important role in controlling algae growth and are preyed upon by specialized gastropod-eating fish and octopuses.
Similar Species
Mauritia scurra (Map Cowrie) and Mauritia arabica (Arabian Cowrie), which can be distinguished by their distinct linear or hieroglyphic patterns rather than rounded spots.
Beach Finding Tips
Dead shells can occasionally be found washed up in shell drift or high-tide lines, but finding live or pristine specimens requires searching under large coral slabs during extremely low spring tides.