Sand Dollar Shell - Natural Marine Fossil with Symmetrical Design #3867606 (License: Personal Use)

The image displays a well-preserved sand dollar test (skeleton), featuring a radial five-part ambulacral pattern resembling a flower, with fine ciliated grooves. Its light beige coloration and smooth surface indicate prolonged exposure to wave action, while the five elongated perforations along the margin are characteristic of the genus *Echinarachnius*. These structures once supported tube feet used for locomotion and feeding when the organism was alive.

Used on marine biology, beachcombing, or coastal decor websites; ideal for educational content about echinoderms, natural history blogs, or e-commerce listings for seashell collections. Matches user intent for identification, decoration inspiration, or science learning.