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, whole valve, fan-shaped
Species
Nodipecten nodosus
Shell Type
Bivalve, whole valve, fan-shaped
Family
Pectinidae (Scallop family)
Size
Approximately 4 inches in length and width, which is average for this species. Adults typically range from 3 to 6 inches.
Color & Pattern
The interior displayed features a deep rich reddish-brown or burgundy central area fading into a clean white margin along the ventral edge. Strong radial ribs are prominent with fine white crenulations. Colors appear entirely natural and vibrant.
Rarity
Uncommon to Rare depending on the specific beach locality; intact specimens with rich color are prized finds.
Habitat
Found in shallow subtidal waters attached by a byssus or living free on coral rubble, rocky bottoms, and sandy substrates.
Geographic Range
Western Atlantic Ocean, ranging from North Carolina down through the Caribbean and Gulf of Mexico to Brazil.
Description
A magnificent bivalve featuring a robust, rounded fan shape with pronounced radial ribs and distinct nodes along the ridges. The interior showcases a striking color contrast between a vivid deep red-brown center and a brilliant white outer border with a scalloped, interlocking edge.
Key Features
Distinguished by its heavy, solid fan-like shell, prominent raised radial ribs featuring characteristic nodules, asymmetrical ears at the hinge, and striking deep red interior coloration.
Collector Value
Highly sought after by collectors due to its striking coloration and sculptural form. Specimens in vibrant condition can command moderate to high prices in the shell market.
Condition Notes
Good to Fine condition. The shell is structurally intact with strong hinge areas and vivid coloration, showing minimal wear and only minor residual sand particles.
Interesting Facts
Lion's paws are capable of swimming short distances by rapidly clapping their valves together to expel water, helping them escape predators like starfish.
Ecological Role
Acts as an active filter feeder helping to maintain water clarity, serving as an important prey item for various marine predators including octopuses and sea stars.
Similar Species
Pacific Lion's Paw (Nodipecten subnodosus), which is generally found on the Pacific coast of the Americas and typically grows larger.
Beach Finding Tips
Look for valves washed up after heavy storms along tropical and subtropical barrier islands, particularly near rocky reefs or offshore scuba diving locations.