Step 1: Let's start with the head. Draw a rectangle tilted slightly diagonally, but leave space for the neck. If you can, make the bottom two corners of the rectangle a bit pointier.
Step 2: We're going to add some detail to the face now. Add a dot for the eye.
Step 3: Next add a curve for the mouth
Step 4: Next we can draw the body. Draw a large oval with triangles on top and underneath for fins. Add lines for gills.
Step 5: Draw the last fin as a thin triangle.
Step 6: Next add the pelvic and anal fins as a zig-zag line along the bottom of the body.
Step 7: Finish with the tail, which is a large triangle with a triangle cut out of it.
How to Draw a Realistic Hammerhead Shark – Step-by-Step Tutorial