Step 1.
Draw a half oval and a straight line (for a head)

Step 2.
Draw the same, but upside down

Step 3.
Draw 2 eyes

Step 4.
Draw 2 lines for a front leg

Step 5.
Draw claws

Step 6.
Repeat step 4 and 5

Step 7.
Draw 3 more legs on each side

Step 8.
Draw 2 lines for a beach and an ocean

Step 9.
Draw a tirangle upside down

Step 10.
Draw some more triangles

Step 11.
Draw a curve for a palm leaf

Step 12.
Draw a curve for a palm leaf

Step 13.
Draw some more palm leaves

Step 14.
Draw the sun...

Step 15.
... and some birds

Step 16.
Colour the palm-tree

Step 17.
Colour the crab

Step 18.
Colour the beach (brighter in front) and the sky (brighter on top) and you're done!