Step 1: Draw a head
Start with a slightly pointed semi-circle facing the direction your shark is heading
Step 2: Draw some fins
Add a big fin at the top by drawing a curved upside down V shape. Then draw a smaller curved V shape at the bottom to make another fin.
Step 3: Draw a body
Draw a couple of lines from each fin to make up the rest of the shark's body. Again, make them ever so slightly curved to give it that bottle neck look.
Step 4: Draw a tail
Connect the two lines of the body with a wide W on its side
Step 5: Draw an eye
Add a squashed circle to the head and a big coloured circle inside that to help the shark see in the murky depths of the ocean
Step 6: Draw a mouth
Draw a curved line from the point of the nose. Don't forget to add a couple of sharp teeth by drawing some triangles from the mouth.
Step 7: Draw some gills
Finally, add three lines just behind the eye so your shark can breathe underwater. Feel free to also add extra features like battle scars or a hat!