A sea urchin is a small globular animal. They are slow moving animals that feed on algae. If you would like to learn how to draw a Sea Urchin, then use this art tutorial.
Step 1 Begin by drawing many spiked lines - going back and forth as you create a circular formation with these spiked lines.
Step 2 Start coloring the background before you color the sea urchin. Then use different shades of blue to illustrate the different layers of spiky points on the animal.
Step 3 Once the drawing is colored, you are done learning how to draw a Sea Urchin.