Bleeding Tooth Nerite (Sun-bleached fragment)
Phylum: Mollusca, Class: Gastropoda, Order: Cycloneritida, Family: Neritidae, Genus: Nerita, Species: Nerita peloronta · Neritidae (Nerite family) · Gastropod (snail); fragment consisting of the columellar deck and partial aperture
Species
Nerita peloronta (approx. 85% confidence based on hinge morphology)
Shell Type
Gastropod (snail); fragment consisting of the columellar deck and partial aperture
Family
Neritidae (Nerite family)
Size
Approximately 12-15mm (0.5 inches). This is a juvenile or broken portion of a medium-sized adult, which typically reaches 1-1.5 inches.
Color & Pattern
Uniformly chalky white to cream. The original vibrant zig-zag patterns and the signature 'blood-red' staining around the columellar teeth have been entirely sun-bleached and eroded by wave action.
Rarity
Very Common; however, finds in this heavily eroded condition are frequently overlooked by collectors looking for live-taken or fresh specimens.
Habitat
Intertidal zone, specifically the 'splash zone' on rocky shorelines, limestone cliffs, and jetties where they cling to rocks above the high-tide line.
Geographic Range
Tropical Western Atlantic, specifically South Florida, the Caribbean (including Cancun/Yucatan), and Bermuda.
Description
A heavily weathered fragment of a gastropod, specifically focusing on the thickened columellar area. Even in this eroded state, the diagnostic flattened 'deck' and remnants of the parietal teeth are visible. The shell material is dense and porcellaneous, typical of species that survive high-energy wave environments.
Key Features
Wide, flattened parietal area (deck); presence of small, bead-like teeth on the inner lip; thick, globose structure; and its characteristic half-moon shaped aperture.
Collector Value
Negligible ($0); this specimen is primarily of sentimental value as a beach find. High-quality 'Gem' specimens with deep red coloring are common in shell shops for $1-$5.
Condition Notes
Poor; Beach-worn/Fair. The shell is missing its spire and outer body whorl. It has been chemically and physically weathered (calcified) by saltwater and sun, losing all its natural pigmentation and fine sculptural details.
Interesting Facts
The 'Bleeding Tooth' gets its name from the orange or red staining around the teeth on the white deck, which looks like a bloody gum. They are master adaptors of the intertidal zone, huddling in rock crevices to retain moisture during low tide.
Ecological Role
A primary grazer in the rocky intertidal ecosystem, Nerites scrape algae off rocks with their radula, preventing algal overgrowth and serving as a food source for crustacea and shorebirds.
Similar Species
Nerita versicolor (Four-toothed Nerite), which has more numerous small teeth and lacks the red staining, and Nerita tessellata (Checkered Nerite), which is smaller and darker.
Beach Finding Tips
In Cancun, look along the rocky limestone outcroppings at the ends of beaches or near jetties. Search in the crevices of rocks during low tide rather than in the shifting sand.
Notes
Cancun