Common Sea Star (also known as Sugar Starfish)
Phylum: Echinodermata, Class: Asteroidea, Order: Forcipulatida, Family: Asteriidae, Genus: Asterias, Species: A. rubens · Asteriidae (Common Starfish family) · Echinoderm test/skeleton (Note: While not a traditional mollusk shell, this dried starfish or sea star test is frequently collected and curated alongside seashells)
Species
Asterias rubens
Shell Type
Echinoderm test/skeleton (Note: While not a traditional mollusk shell, this dried starfish or sea star test is frequently collected and curated alongside seashells)
Family
Asteriidae (Common Starfish family)
Size
Approximately 4-5 inches across, which is typical for a young adult specimen. Adults of this species can range from 2 to 12 inches.
Color & Pattern
Warm orange-yellow base coloration with contrasting white calcareous granules and spines distributed evenly across the dorsal surface. The coloration is typical of a dried specimen, slightly sun-bleached from its vibrant living state.
Rarity
Very Common
Habitat
Found in marine environments, ranging from the intertidal zone down to depths of several hundred meters. Prefers rocky substrates, shell gravel, and occasionally sandy bottoms.
Geographic Range
North Atlantic Ocean, found along the coasts of Europe, Iceland, and northeastern North America.
Description
An attractive, symmetrical five-armed sea star with a central disc. The upper surface is densely covered in small, whitish calcareous ossicles and spines, giving it a textured, pebbled appearance. The arms taper gently to blunt tips.
Key Features
Five distinct tapered arms radiating from a central disc, covered in numerous uniform white spicules and granules over an orange background.
Collector Value
Low to moderate value. Commonly found in craft markets and shell shops, making it popular for coastal decor rather than high-end conchology collections.
Condition Notes
Good condition. Intact arms with minimal tip damage, retaining much of its natural color and dried structural integrity, graded as Fine for a decorative specimen.
Interesting Facts
Sea stars lack a brain and blood, using a hydraulic water vascular system to move, breathe, and feed. They possess remarkable regenerative capabilities and can regrow lost arms.
Ecological Role
A prominent carnivorous predator in marine benthic ecosystems, feeding primarily on bivalves like mussels and clams, helping to maintain species diversity in intertidal communities.
Similar Species
Other sea star species such as Pisaster ochraceus (Ochre sea star), distinguished by geographic range and spine arrangement.
Beach Finding Tips
Look along rocky shores and tide pools at low tide, or scan the strandline after severe storms where dried tests wash ashore.