Common Explainations for Orbs, Mist, and Smoke on Film

By the way, the consensus is that you caught an amazing photo of sunglare. Sunglare that's bouncing off other objects. Awesome and totally natural. It shows how spectacular light can be. You should get kudos for being able to catch such an usual shape.

Shadows can do the same thing. Often so-called shadow people are nothing more than cool plays with light on surfaces.