Draw a curved line for the dolphin’s back
Draw a rounded shape for the head
Add a long curved line for the belly
Sketch a pointed snout
Draw a small eye near the front of the head
Add a dorsal fin on top of the body
Draw a side fin near the middle
Add a tail with two wide flukes
Smooth and connect all the body lines
Erase extra sketch lines
Outline the dolphin clearly
Add simple details like a mouth line and a few curves for shape