Denise has no sunglasses, nor friend the hat, cannot stare into the sun, cannot open her eyes, even though she tries at the request of Gregg. He takes photo anyway.
Gregg standing in front of one of the small touring boats. The same boat is in the photo below. He notices that there are pointed cones on all the pylons where the boats tie up, to stop the seagulls and other birds from landing on them presumably.