Draw a tilted egg-shape, very narrow at one end.
- draw front boomerang-shaped flippers
- rather triangular back flippers
- add the spoon-shaped head and neck

- draw another egg shape inside the first, as shown
- add a row of squashed diamond shapes along the middle.
- draw the eye and mouth.

- Draw the lines dividing up the outer band of the shell
- add a random pattern over the skin