Apple Murex (also known as the Red-mouthed Murex or Apple Rock Shell)
Phylum: Mollusca, Class: Gastropoda, Order: Neogastropoda, Family: Muricidae, Genus: Phyllonotus, Species: Phyllonotus pomum · Muricidae (Murex or Rock Shell family) · Gastropod (snail/univalve), whole shell, spiral shape with prominent varices and spines
Species
Phyllonotus pomum
Shell Type
Gastropod (snail/univalve), whole shell, spiral shape with prominent varices and spines
Family
Muricidae (Murex or Rock Shell family)
Size
Approximately 4 inches in length, which is within the upper-average size range for this species. Adults typically range from 2.5 to 5 inches.
Color & Pattern
The exterior exhibits a heavily weathered, dark greyish-brown to black encrustation with striking contrast where the underlying shell layers are exposed, revealing bright white and vibrant orange-brown spiral banding between the robust varices. The coloration is heavily modified by marine fouling and natural aging.
Rarity
Common, frequently found by dedicated beachcombers and divers within its natural range, though specimens with intact, untarnished natural color and minimal fouling are more selectively prized.
Habitat
Inhabits shallow subtidal waters, muddy bays, sand flats, and rocky areas near coral reefs, typically found at depths ranging from the low intertidal zone down to about 150 feet. It is a strictly marine species.
Geographic Range
Western Atlantic Ocean, ranging from North Carolina through Florida, the Gulf of Mexico, the Caribbean Sea, and down to northern South America.
Description
A robust, heavy, and rugged murex shell characterized by a high, pointed spire and a rounded body whorl featuring rough, jagged varices and blunt, triangular spines. The exterior is deeply textured with spiral cords and nodes. The overall structure is thick and heavy, built to withstand turbulent wave action in rocky environments.
Key Features
Distinguished by its heavy, bulbous body whorl, rounded spiral whorls with sharp spines on the varices, a well-developed siphonal canal, and a distinctively textured outer surface.
Collector Value
Low to Moderate commercial value due to its common occurrence, typically valued as an educational or decorative display piece rather than a high-end collector gem, especially given the heavy exterior weathering.
Condition Notes
Fair to Good condition. The shell shows significant weathering, dark organic or mineral staining, and marine fouling on the exterior, typical of an older beach-worn or shallow-water find, though the underlying structural integrity remains strong.
Interesting Facts
Members of the Muricidae family are notorious carnivorous predators that bore holes into the shells of bivalves using a specialized radula and acidic secretions to feed on the soft tissue inside. Historically, some murex species were the primary source of the legendary Tyrian purple dye prized by ancient civilizations.
Ecological Role
As an active carnivore and apex predator of other mollusks and barnacles, it plays an important role in controlling invertebrate populations within its benthic marine ecosystem.
Similar Species
Can be confused with the West Indian Murex (Phyllonotus margaritensis) or the Black-spotted Murex (Phyllonotus fulvescens). It is distinguished from the latter by its smaller overall size and shorter, broader spines.
Beach Finding Tips
Look along Gulf and Caribbean beaches after major tropical storms or rough sea conditions. Check around rocky outcroppings, shell piles at the high tide line, and shallow seagrass beds during extreme low tides.