Sea Urchin Anatomy Diagram - Marine Biology Educational Illustration #1747708 (License: Personal Use)

This vibrant, educational illustration depicts a sea urchin in dorsal view, emphasizing its pentaradial symmetry, numerous elongated calcareous spines, and the orange-colored test (shell) with visible tube feet openings. The clean linework and contrasting colors make it ideal for teaching echinoderm morphology and adaptation in benthic marine environments.

Used on marine biology educational websites, science textbooks, or museum exhibits to explain echinoderm anatomy; targets students, educators, and nature enthusiasts seeking visual clarity on sea urchin structure and function.