Deputies were called to Boca Chica Road on Geiger Key at approximately 8:52 a.m. Monday after a Little Torch Key man reportedly shot himself near the waterline.
Deputies arrived at the end of the road to find 56-year-old Gregory Scott Kavanagh of the 28000 block of Channel View Drive, deceased. A handgun was found near Kavanagh.
Several people reported hearing a gunshot in the area and found Kavanagh on the beach.
Foul play is not suspected at this time.
Autopsy reports are pending.