Bleeding Tooth Nerite (Commonly Nerites)
Phylum: Mollusca; Class: Gastropoda; Order: Cycloneritida; Family: Neritidae; Genus: Nerita; Species: Nerita peloronta · Neritidae (Nerite family) · Gastropod (univalve); Spiral/Globose shape. The specimen shown is a weathered shell fragment primarily consisting of the aperture and columellar area.
Species
Nerita peloronta (Juvenile or weathered specimen)
Shell Type
Gastropod (univalve); Spiral/Globose shape. The specimen shown is a weathered shell fragment primarily consisting of the aperture and columellar area.
Family
Neritidae (Nerite family)
Size
Approximately 5-8mm in its current state. Adult specimens typically reach 1-1.5 inches, making this a small juvenile or a heavily eroded fragment.
Color & Pattern
Creamy white to pale beige base. This specimen appears sun-bleached and worn by surf action. Fresh specimens feature zig-zag black and red patterns on the exterior with characteristic red/orange staining near the teeth.
Rarity
Very Common. These are among the most frequently encountered shells on rocky Caribbean beaches, though finding a perfectly preserved adult is more rewarding.
Habitat
Intertidal zone; specifically found on rocky shorelines, jetties, and cliffs where they cling to rocks above the low-tide mark.
Geographic Range
Tropical Western Atlantic, including Florida, the Caribbean (Cancun/Mexico), and Bermuda.
Description
A sturdy, globose gastropod shell known for its thick walls and flat, 'toothed' columellar area. This specimen is a beach-worn fragment focusing on the D-shaped aperture.
Key Features
The most diagnostic feature is the flat columellar deck with one or two prominent 'teeth' and the eponymous reddish-orange stain that resembles blood on the inner lip.
Collector Value
Minimal financial value ($0.10-$0.50) due to commonality and worn condition. However, Nerites are popular for shoreline education and hobbyist craft use because of their robust structure.
Condition Notes
Poor to Fair. This is a highly eroded beach-worn specimen. Much of the outer whorl and original pigmentation have been lost to wave action and sun bleaching. Collectibility grade: Fair/Study Grade.
Interesting Facts
Nerites are incredibly hardy and can survive long periods out of water by trapping moisture in their shells. The 'teeth' and red staining are thought to deter predators by mimicking a wounded or unpalatable organism.
Ecological Role
Primary consumers; they serve as important grazers of algae on rocky substrates, keeping the reef and shoreline ecosystems balanced.
Similar Species
Nerita versicolor (Four-toothed Nerite) which lacks the deep red 'bleeding' stain and has more numerous, smaller teeth.
Beach Finding Tips
Search the 'splash zone' on rocky outcrops or limestone shelves at low tide. Look in the crevices of rocks rather than just on the sand.
Notes
Cancun