Megan's got 47

Megan seems to have a ghost! It shows up in pictures in different forms. I know this sounds unreal and bizarre but it is true. I know Leah will believe me!
Here are links to pictures. I don't want to shrink the picture so you can see the full image. It is a terrible picture but over Megan's right shoulder is a shadow of something, a treasure chest or something? Not sure what it is but it is not a structure in that room. I do have other pictures that I will share later. I just wanted to post these to get an opinion from others out there.
Picture 1

Here it is again in a close up
Picture 2


EDITED TO ADD:
ok, here are some from the beach. It seems in theses pictures that everything is clear except around Megan's head.
Picture 3

Picture 4

Picture 5

Picture 6