Venus Comb Murex
Phylum: Mollusca, Class: Gastropoda, Order: Neogastropoda, Family: Muricidae, Genus: Murex, Species: Murex ternispina · Muricidae (Murex family) · Gastropod (spiral shape)
Species
Murex ternispina
Shell Type
Gastropod (spiral shape)
Family
Muricidae (Murex family)
Size
Approximately 4-5 inches in length including the spines, which is typical for a mature specimen of this species. Adults generally range from 3 to 6 inches.
Color & Pattern
The shell features a creamy off-white to pale yellowish-tan base color with subtle brownish bands or tinges along the body whorl. The surface appears slightly sun-bleached and worn, typical of a specimen found after exposure. The exterior displays prominent delicate spines, while the interior of the aperture is smooth and white.
Rarity
Common to Uncommon, depending on the specific locality, though intact specimens with all delicate spines unbroken are less frequently found.
Habitat
Found in shallow to moderately deep subtidal waters, typically inhabiting sandy or muddy bottoms, often near coral reefs or rocky areas.
Geographic Range
Indo-West Pacific region, including the waters around Southeast Asia, the Philippines, Indonesia, and northern Australia.
Description
An exquisite and delicate marine gastropod featuring an elongated body whorl and a remarkably long, straight siphonal canal adorned with rows of slender, needle-like spines. The outer lip features a distinct comb-like array of recurved spines that give the shell its iconic Venus Comb appearance. The spire is relatively high with several well-defined whorls, showcasing intricate sculptural ridges.
Key Features
Distinguished by its extremely long siphonal canal and multiple rows of long, delicate, recurved spines lining the outer lip and canal, separating it from other murex species which typically have shorter or blunter spines.
Collector Value
Moderately high desirability among collectors due to its striking and delicate sculptural form. Perfect, flawless specimens command higher prices, while typical specimens like this are commonly found in shell shops valued at a modest range.
Condition Notes
Fair condition for a delicate murex. The main body and several major spines are intact, but some of the finer secondary spines show wear or slight breakage, which is common due to the extreme fragility of the structure. Collectibility grade is Good.
Interesting Facts
The numerous long spines are an evolutionary adaptation to deter predators and prevent the shell from sinking too deeply into soft mud or sand substrates. Muricids are also known for producing a yellowish mucus that turns purple-blue in sunlight, historically used to make Tyrian purple dye.
Ecological Role
As a carnivorous predator, the Venus Comb Murex feeds on other mollusks and barnacles by boring holes in their shells or using its strong foot to pry them open, playing an important role in controlling marine invertebrate populations.
Similar Species
Murex tribulus (Thorny Murex), which has shorter and slightly sturdier spines, and Chicoreus ramosus (Branched Murex), which is much bulkier with heavy fronds rather than needle-like spines.
Beach Finding Tips
Finding an intact Venus Comb Murex on a beach is rare because the delicate spines easily break upon wave action. They are more commonly acquired through local divers, fishing nets, or specialized shell dealers.