The original backwards challenge!!! Have you got eyes in the back of your head?
The picture you see on the box lid is NOT the puzzle picture but holds the clues to what the puzzle picture is. To complete the puzzle, imagine what the character in the box lid can see.
What? We don't like to be beside the seaside? Imagine you're the lifeguard - what he can see beyond and including the heads and deckchairs is what the puzzle picture depicts.
Sorry, but if you really, really want to see the solution, you will have to do the puzzle. Good luck!!!