Im not ruling out anything. I dont know for sure. It didnt look like any gulls Ive seen. Surfing around here for 40 years Ive seen about every gull there is here. Not to mention, every parking lot in town is full of them. Skinny, long wings and the white section underneath the wings, was the main parts that I was going by. It was bigger than a gull. Other Petrels Ive seen have just dark edges on their underwing or all one color. . This one, just the center section from the body to about halfway was white. Im not sure was the main reason I came here.