What a great shot Vicki! A very pretty scene! I would guess that what the seagull was thinking about is what all seagulls seem to think about all of the time - "where's lunch?"
The gull is splendid but I really enjoy your capture of that rolling sea foam. You have two great things in here for the price of one. I also enjoy the reflection cast by the bird as well. Well you now have three great things.
He is trying to figure out if he wants sardines or clams for lunch. A good capture of the gull and surf. Nice composition of the scene and a nice reflection of the gull in the sand.