Taken back one February morning, and don't remember if this gull was landing or taking off. Like the pose and pretty sure I was laying on the sand for the low angle.
Rotated, crop, ACR, CS5, some sand & background clean-up.
7D, EF70-200mm f/2.8L IS II USM +2.0x, Hand-held
1/3200
5.6
ISO 400
I'd say you nailed this guy. Good-looking beach and BG, HA and the eye are perfect. Looks like you held the whites pretty dang well with the possible exception of the leading edge of the right wing. I love the wing position and action. I vote for takeoff, as he looks just ready to push off with the left foot.
Well exposed Brendan, with good underwing detail. Lovely eye, and the whites pop nicely against the sea BG. If this were mine, I would add a touch more to the bottom of the image.