One hour drawing

I make a lot of sketches and most of the time they are one minute sketches. This time I had an idea what took me a bit longer to make: a one hour drawing.
At first the sketch which took me about 5 minutes.

The idea was that the shark was swimming in a kind of a museum and that the boy was running under water. My son thought that was weird and made the suggestion to let the shark swim in a bassin and let the boy run in front. That was a much better idea!

The final result took me about an hour to make.