Sand Dollar Anatomy Diagram - Marine Biology Illustration #3878348 (License: Personal Use)

This precise line drawing depicts the aboral (top) side of a sand dollar test, featuring the characteristic five-petaled flower-like pattern known as the petaloid ambulacra, which houses the tube feet. Surrounding the central pattern are small, paired pores used for respiration and movement. The outer edge shows the irregular, scalloped margin typical of echinoid tests.

Used in marine biology textbooks, educational websites, and museum exhibits to teach echinoderm anatomy; serves users seeking to identify or understand sand dollar morphology.