Blood-tooth Bleeding Tooth (Nerita peloronta)
Phylum: Mollusca | Class: Gastropoda | Order: Cycloneritida | Family: Neritidae | Genus: Nerita | Species: N. peloronta · Neritidae (Nerite family) · Gastropod (univalve), whole shell, hemispherical or globose shape
Species
Nerita peloronta
Shell Type
Gastropod (univalve), whole shell, hemispherical or globose shape
Family
Neritidae (Nerite family)
Size
Approximately 0.75 to 1 inch, which is average for an adult specimen of this species. Adults typically range from 0.75 to 1.25 inches.
Color & Pattern
Characterized by a pale whitish, yellowish, or greyish background overlaid with striking zigzag patterns of dark brown or black. The defining feature is a prominent blood-red stain on the inner lip (columella) that resembles a bleeding tooth.
Rarity
Common in appropriate rocky habitats, though finding specimens with vibrant, undamaged red columella markings makes them prized among casual beachcombers.
Habitat
Found primarily in the high intertidal zone, clinging tenaciously to exposed rocky shores, limestone cliffs, and intertidal rocks where they can withstand heavy wave action and prolonged exposure to air.
Geographic Range
Western Atlantic Ocean, including southern Florida, the Bahamas, the Caribbean Sea, Bermuda, and down to the coast of South America.
Description
A sturdy, thick-shelled marine snail with a low spire and a large, rounded body whorl. The exterior features coarse spiral ridges and zigzag color bands. The aperture is semicircular with a flattened columellar deck that bears distinctive teeth on the inner margin alongside the signature blood-red stain.
Key Features
The unmistakable crimson or blood-red patch on the inner columellar lip, combined with strong spiral sculpture and zigzag color patterns on a globose shell.
Collector Value
Modest collector value. While very common in their native range, they are popular starter shells and educational pieces due to their unique coloration and common name origin.
Condition Notes
Specimen appears mostly intact with good structural integrity. Colors show slight natural fading from exposure, but the diagnostic red tooth marking remains visible. Overall collectibility grade is Good.
Interesting Facts
Nerites are remarkably resilient intertidal creatures capable of breathing air for extended periods during low tide. They graze on microscopic algae scraped from rocks using a specialized radula.
Ecological Role
Acts as an important primary consumer and algae grazer on rocky shores, helping to control algal growth and serving as a food source for coastal predators such as shorebirds and crabs.
Similar Species
Other nerite species such as the Four-toothed Nerite (Nerita versicolor) or Tessellated Nerite (Nerita tessellata), which lack the distinctive red bleeding-tooth mark on the columella.
Beach Finding Tips
Search rocky intertidal zones, particularly around limestone outcroppings and tide pools at low tide. Look closely at crevices and high-tide drift lines where intertidal shells accumulate.