Apple Murex (also known as the Common American Murex or Red-mouthed Murex)
Phylum: Mollusca, Class: Gastropoda, Order: Neogastropoda, Family: Muricidae, Genus: Phyllonotus, Species: Phyllonotus pomum · Muricidae (Murex family or Rock Shells) · Gastropod (univalve snail), whole shell, spiral shape with heavy knobs and spines
Species
Phyllonotus pomum
Shell Type
Gastropod (univalve snail), whole shell, spiral shape with heavy knobs and spines
Family
Muricidae (Murex family or Rock Shells)
Size
Approximately 2.5 to 3 inches in length, which is a moderate, average size for this species. Adult specimens typically range from 2 to 5 inches.
Color & Pattern
The exterior features a creamy white or light tan base color adorned with rich, contrasting blotches and spiral bands of dark reddish-brown, chestnut, and chocolate brown. The colors appear natural and well-preserved. The aperture interior, though partially obscured in this dorsal view, typically reveals a warm pinkish or orange-red flush inside the outer lip.
Rarity
Common; frequently washes up on beaches throughout its range, particularly after storms.
Habitat
Inhabits shallow subtidal waters, bays, and offshore areas down to about 50 meters. Prefers sandy bottoms, mud flats, rubble zones, and seagrass beds.
Geographic Range
Western Atlantic Ocean, ranging from North Carolina through Florida, the Gulf of Mexico, the Caribbean Sea, and down to northern South America (Brazil).
Description
A robust, heavy-bodied rock shell characterized by a rounded body whorl, a well-defined pointed spire, and prominent spiral ridges crossed by rough axial varices adorned with blunt, knobby spines. The shell has a solid feel with intricate sculptural details and a textured surface reflecting a predatory marine life history.
Key Features
Distinguished by its heavy, globular body whorl, rounded knobs on the varices, a moderately short siphonal canal, and the distinct reddish or pinkish coloration usually found deep within the aperture.
Collector Value
Low to moderate value. It is a very popular shell for beginning and intermediate collectors due to its appealing shape and rich coloration, commonly found in shell shops, with individual specimens typically valued between $2 and $10 depending on size and grade.
Condition Notes
Good to Fine condition. The shell is intact with minimal wear on the spire tips and sculptural spines, showing bright, natural coloration without significant sun-bleaching.
Interesting Facts
Like other murex snails, Phyllonotus pomum is a carnivorous predator that drills holes into the shells of bivalves using its radula and an accessory boring organ to consume the soft tissue inside. They are also known to secrete a yellowish fluid that turns purple upon exposure to sunlight, historically related to the famous Tyrian purple dye.
Ecological Role
Acts as an important carnivorous predator in benthic marine ecosystems, helping to regulate populations of bivalves and other mollusks. It serves as food for larger marine carnivores and provides temporary hard substrate or homes for hermit crabs after death.
Similar Species
Can be confused with the West Indian Murex (Phyllonotus margaritensis) or the Pitted Murex (Favartia cellulosa). The Apple Murex is generally heavier, more rounded, and features distinct brownish banding patterns.
Beach Finding Tips
Look along Gulf Coast and Florida beaches after strong onshore winds or tropical storms, particularly around low tide near shell lines deposited in the sand.