What a terrific sequence! I think, Tim, the gull originally had paella in mind, what with the clams and all. In the end, it settled for something simpler - antipasto. Super job.
Congratulations on an amazing capture of almost surreal moment!
Everything about this is unique, but for me the most striking thing is the gull stepping away after dropping the octopus on the mud flat: another gull or a flyby raptor could easily swipe it's fresh caught dinner!