Step 10: Use the initial diamond shape as a guide to draw the rest of the whale shark's head. Follow the basic path of the guide but make the shape of the head curvier as you darken the lines. Draw a couple of short lines above the lower edge of the head for extra detail. To the right, draw five short, vertical lines for the whale shark's gills.
Step 11: To the right of the mouth, draw a tiny circle with a dot inside for the whale shark's eye. To the right of the eye, draw a tiny, C-shaped line for the ear opening.
Step 12: Darken the shape to the right of the gills for the whale shark's pectoral fin. Make the tip rounder.
Step 13: Darken the shapes at the top for the whale shark's dorsal fins but make the tips rounder. Curve the right edges of the fins at the bottom toward the body a bit.
Step 14: Darken the V-shaped lines under the body for the whale shark's pelvic and anal fins.