Lion's Paw Scallop (Also known as Nodipecten)
Phylum: Mollusca, Class: Bivalvia, Order: Pectinida, Family: Pectinidae, Genus: Nodipecten, Species: Nodipecten nodosus · Pectinidae (Scallop family) · Bivalve (two-shelled), whole shell, fan shape
Species
Nodipecten nodosus
Shell Type
Bivalve (two-shelled), whole shell, fan shape
Family
Pectinidae (Scallop family)
Size
Approximately 2.5 to 3 inches in width, which is slightly smaller than average for mature adults of this species. Adults typically range from 3 to 6 inches.
Color & Pattern
Vibrant and striking reddish-orange base coloration with lighter white or pinkish spots accenting the prominent raised ribs and nodes. Colors appear bright and natural with minimal fading. The interior (not fully visible) is typically a glossy white or flushed with orange near the hinge.
Rarity
Uncommon to Rare as a complete, brightly colored beach find, though commercially available through shell dealers.
Habitat
Found in shallow subtidal waters down to moderate depths, attached by a byssus when young or living unattached on sandy bottoms, rubble, and coral reef ecosystems. Marine species.
Geographic Range
Western Atlantic Ocean, ranging from North Carolina through the Caribbean, Gulf of Mexico, down to Brazil.
Description
A magnificent and highly tactile bivalve featuring a distinct fan shape with strong, radiating ribs adorned with characteristic rounded nodules or spines. The surface has fine reticulated texturing between the ribs. The asymmetrical auricles (ears) at the hinge are clearly defined, giving it the classic regal appearance of a scallop.
Key Features
Prominent hollow, rounded knobs or nodes lining the major radial ribs, an inequilateral fan shape with unequal auricles, and brilliant red-orange coloration.
Collector Value
Highly desirable and sought after by collectors due to its striking color variations and dramatic sculptural nodes. Specimens in vibrant red with intact nodes command good prices in the collector market.
Condition Notes
The shell appears to be in very good condition with strong structural integrity, vibrant coloration, and well-preserved ribs and nodes. Minor wear on the hinge ears, overall grade is Fine to Gem.
Interesting Facts
Unlike many bivalves, Lion's Paw scallops can swim short distances by rapidly clapping their valves together to expel water, helping them escape predators like sea stars.
Ecological Role
Acts as an active filter feeder, improving water clarity by consuming phytoplankton. Serves as an important food source for marine carnivores including octopuses, sea stars, and large fish.
Similar Species
Pacific Lion's Paw (Nodipecten subnodosus), which is generally larger and found on the Pacific coast of the Americas, and the Atlantic calico scallop (Argopecten gibbus), which lacks the prominent nodules and heavy ribs.
Beach Finding Tips
Finding a whole, brightly colored Lion's Paw on a standard beach is a rare treat. Scuba diving or snorkeling in clear Caribbean waters near reef rubble lines and hard bottom drops offers a better chance of spotting them.