When the juvenile cormorant came up from its dive with a fish, it was immediately mobbed by the gulls who caused the fish to be dropped. Ring-billed gulls are vicious thieves. You can see the cormorant with just its head above the water about to buried under gulls.
Juvenile Double-crested Cormorant (Phalacrocorax auritus)
Ring Billed Gulls (Larus delawarensis)