Sand Dollar Illustration - Marine Biology & Coastal Art Resource #3878367 (License: Personal Use)

This is a monochrome hand-drawn illustration of a sand dollar (class Echinoidea), featuring the characteristic petal-like ambulacral grooves radiating from the center and five oval-shaped lunules (perforations) around the edge. The textured outline mimics the test’s granular surface, rendered in fine cross-hatching to suggest depth and form. The drawing emphasizes biological accuracy while retaining an artistic, sketchbook aesthetic.

Used in marine biology education, nature blogs, coastal decor websites, or children’s science resources; serves users seeking accurate yet accessible visuals of echinoderms for learning or design inspiration.