Bleeding Tooth Nerite (alternate common names: Red-spotted Nerite, Common Bleeding Tooth)
Phylum: Mollusca, Class: Gastropoda, Order: Cycloneritida, Family: Neritidae, Genus: Nerita, Species: Nerita peloronta · Neritidae (Nerite family) · Gastropod (snail/univalve), whole shell, globular or semi-spherical shape
Species
Nerita peloronta
Shell Type
Gastropod (snail/univalve), whole shell, globular or semi-spherical shape
Family
Neritidae (Nerite family)
Size
Approximately 1 inch in length and width, which is average for this species. Adult sizes typically range from 0.75 to 1.25 inches.
Color & Pattern
Chalky white base background heavily eroded or heavily encrusted with calcareous deposits, revealing characteristic bright crimson-red or blood-red spots near the aperture region. The natural pattern typically features zig-zag lines of yellow, black, and white, but this particular specimen shows significant wear and bleaching.
Rarity
Common in its natural rocky habitat and frequently found by beachcombers along suitable tropical rocky shorelines, though intact specimens with original unblemished color patterns are more prized.
Habitat
Found in the intertidal zone, predominantly on rocky shores, limestone outcroppings, and high-energy intertidal spray zones clinging tightly to rocks above the waterline during low tide.
Geographic Range
Tropical Western Atlantic, including South Florida, the Florida Keys, the Bahamas, the Caribbean Sea, and extending down to northern South America.
Description
A robust, thick, hemispherical marine snail shell with a low spire and a heavily callused inner lip (columella) adorned with distinctive red or pink teeth-like serrations that give the species its striking common name. The exterior surface shows rugged sculptural growth lines.
Key Features
The presence of bright red-stained teeth on the inner parietal lip resembling a blood-stained mouth or tooth, combined with a stout, rounded, low-spired whorl structure.
Collector Value
Low to moderate commercial or collector value due to its common abundance, though specimens with pristine, unfaded zigzag patterns and bright crimson teeth are favored by beginner shell enthusiasts.
Condition Notes
Fair to Poor condition. The specimen is heavily weathered, worn, and encrusted with calcareous deposits or encrusting organisms, obscuring the primary exterior color bands, though the characteristic red aperture features remain partially hinted at.
Interesting Facts
Nerites are remarkably resilient intertidal creatures capable of surviving out of water for extended periods by sealing their operculum tightly against the rock, breathing air through a modified mantle cavity that acts like a primitive lung.
Ecological Role
Acts as an important marine herbivore, grazing on microalgae and biofilm from intertidal rocks, thereby helping to regulate algal growth and shaping rocky shore community structures.
Similar Species
Nerita versicolor (Four-toothed Nerite) and Nerita tessellata (Tessellated Nerite), which can be distinguished by their lack of the prominent blood-red staining on the columella and different coloration patterns.
Beach Finding Tips
Look along rocky limestone shores, wave-cut platforms, and tide pools in the Caribbean or South Florida, especially just above the high tide line where they congregate in crevices.