Common Atlantic Tritons-Trumpet or Channeled Dog Whelk (commonly identified as a dwarf triton or small whelk/mud snail)
Phylum: Mollusca, Class: Gastropoda, Order: Neogastropoda, Family: Nassariidae, Genus: Nassarius, Species: Nassarius trivittatus · Nassariidae (Nassa mud snails or dog whelks) · Gastropod (univalve), whole shell, spiral shape
Species
Nassarius trivittatus or related small intertidal gastropod (Confidence: High for Nassariidae family, Moderate for exact species due to scale)
Shell Type
Gastropod (univalve), whole shell, spiral shape
Family
Nassariidae (Nassa mud snails or dog whelks)
Size
Approximately 0.5 inches (12-15 mm) in length, which is average for this species. Adults typically range from 0.4 to 0.7 inches.
Color & Pattern
Off-white to light cream base color with subtle brownish-gray spiral banding and axial ribs. The colors appear somewhat weathered and beach-worn, typical of a specimen found on the shore. The interior aperture matches the exterior with a smooth, glazed finish.
Rarity
Very Common, frequently washed up on beaches within its natural geographic range.
Habitat
Shallow intertidal and subtidal zones, typically found on sandy or muddy bottoms in bays, estuaries, and protected coastal waters, often burying themselves in the sediment.
Geographic Range
Found along the Atlantic coast of North America, from the Gulf of St. Lawrence down to Florida.
Description
A charming, miniature spiral shell featuring prominent axial ribs and spiral cords that create a distinct checkered or beaded texture. It has a compact spire, a rounded body whorl, and a relatively short siphonal canal with a clear, oval-shaped aperture.
Key Features
Prominent axial ribs crossed by fine spiral striations, a compact conical spire, and a small notch-like siphonal canal typical of the Nassariidae family.
Collector Value
Low commercial value due to its abundance, but highly appreciated by beginning beachcombers and micro-shell enthusiasts.
Condition Notes
Good condition overall. Intact structure with slight weathering and fading on the surface, typical for a beach find. Collectibility grade is Good.
Interesting Facts
Nassarius snails are notable scavengers, often referred to as marine vultures. They can detect food in the water column from long distances and will rapidly emerge from the sand in a swarm to feed on decaying organic matter.
Ecological Role
Acts as an essential marine scavenger, cleaning up detritus and dead organic material from benthic environments, thereby recycling nutrients in intertidal ecosystems.
Similar Species
Other Nassarius species such as Nassarius obsoletus (Eastern Mudsnail), which is smoother and darker, and Nassarius vibex (Bruised Nassa), which has a more mottled purple-brown pattern.
Beach Finding Tips
Look along sandy or muddy shoreline wrack lines during low tide, or sift through fine shell drift with a small hand trowel.