This is a Pelican that stays around the shallows during low tide. At the change of the tide there is plenty of activity to move fish.
Once the tide moves, Pelicans, Dolphins, Osprey and all types of Gulls search for the schools. They each push the fish around so one of them will make a catch.
I walked past this Pelican, I guess a little too close. He moved on. Truth be told I never did see him until he took off.