Bleeding Tooth Nerite (Eroded/Beach-worn specimen)
Phylum: Mollusca, Class: Gastropoda, Order: Cycloneritida, Family: Neritidae, Genus: Nerita, Species: Nerita peloronta · Neritidae (Nerite family) · Gastropod (snail/univalve); Shell fragment/severely worn whole shell; Globular/Semi-hemispherical shape
Species
Nerita peloronta
Shell Type
Gastropod (snail/univalve); Shell fragment/severely worn whole shell; Globular/Semi-hemispherical shape
Family
Neritidae (Nerite family)
Size
Approximately 1.5 - 2 cm (0.6 - 0.8 inches). This factor is slightly below average for an adult, which typically reaches 2-5 cm.
Color & Pattern
Heavily eroded. Shows a mottled brownish-tan base with significant white calcium deposits and calcified encrustations. Small traces of pinkish-red are visible, which are the remains of the 'bleeding' stains characteristic of this species.
Rarity
Very Common. While live specimens and fresh shells are abundant on rocky Caribbean shores, they are often found as smoothed, white-washed stones like this one after long periods of wave action.
Habitat
Intertidal zone, specifically the 'splash zone' on rocky shorelines. They are marine gastropods that spend much of their time out of the water, clinging to wave-beaten rocks.
Geographic Range
Tropical Western Atlantic; common throughout the Caribbean (including Cancun, Mexico), Florida, and Bermuda.
Description
A heavily weathered and beach-worn specimen of a Nerita shell. The original sculptural ribs have been smoothed away by the Caribbean surf, leaving a stone-like pebble appearance. The apex is sunken and eroded, and the shell is covered in a white, chalky layer of calcium carbonate or coralline algae.
Key Features
Even in this worn state, the diagnostic feature is the flat, broad columellar area (the 'inner lip') which often retains small red/orange stains resembling blood, though here they are largely obscured by erosion and calcium buildup.
Collector Value
Minimal financial value ($0.05 - $0.50). This specimen is primarily a sentimental souvenir. High-quality 'Gem' specimens with deep red staining and intact sculpture are more desirable to collectors but still relatively inexpensive.
Condition Notes
Poor/Beach-worn condition. The shell lacks its original spiral ribbing and vibrant coloration. It is heavily calcified with significant erosion of the outer layer. Collectibility grade: Fair (as a personal souvenir) to Poor (for a professional collection).
Interesting Facts
The 'Bleeding Tooth' gets its name from two small white teeth on its inner lip surrounded by a reddish stain. Historically, nerites have been used in jewelry. They have a unique 'homing' behavior where they return to the same rock crevice after feeding on algae.
Ecological Role
An important grazer in the rocky intertidal ecosystem. They consume large amounts of algae and biofilm from rocks, helping to control algal growth and serving as a food source for crabs and sea birds.
Similar Species
Nerita fulgurans (Antillean Nerite) or Nerita versicolor (Four-toothed Nerite). Distinguished from the Bleeding Tooth by the lack of blood-red staining on the columella and different tooth counts.
Beach Finding Tips
In Cancun, look along the rocky jetties or limestone outcroppings at low tide. They are often tucked into crevices just above the waterline. Finding a smooth shell like this suggests looking in the 'shell hash' piles where waves deposit debris.
Notes
Cancun