Hope this starts things off, but lets see some others
I took this photo while wading in the surf. This was a directional buoy that had washed up on the shore of Hilton Head Island during hurricane Matthew. The background is that of the new moon coming through the clouds that night.
Taken with Canon 6D, a cam ranger to an iPad, a Yongnuo YN 900 Panel and a Streamlight Waypoint flashlight.