I took pictures at sunset Thursday, June 16 around 7:30-8:00pm on Wrightsville Beach, NC at the southern point of the island where the ocean meets the sound. The next day when I was posting them on Facebook, I noticed a glowing green spot on the image, and enlarged it to see what it was. It appeared to be a translucent,glowing, green orb with dots,lights, or spines on the surface.I then discovered another photo in a different location down the beach with a similar orb on the sand, and 3 more photos with similar, but more perfectly round objects in the sky. In the glare of the sunset, I did not actually see these objects when I took the photos. The photos are from my Galaxy 6S Edge phone, and are untouched outside of cropping to view the objects more closely. Other photos taken at the same time do not have this green spot, so it is not something foreign on or in the camera.Since I only discovered the orbs in photos after I had left the area, I have no answers to questions 2-6.