Arline Dunmire Missing Person Case

Arline Jacqueline Dunmire, aged 72, disappeared on May 7, 2019, while diving with her husband near the Adolphus Busch shipwreck, located about seven miles off the coast of Big Pine Key, Florida. The couple had taken a personal vessel to the dive site, which is popular for recreational diving. During the dive, Dunmire vanished, and her husband reported her missing at around 12:30 PM.

Despite extensive search efforts by the U.S. Coast Guard and other agencies, which spanned more than 2,100 square nautical miles over 106 hours, Dunmire was never located. Search teams used aircraft and boats to cover a vast area, but the operation was called off on May 9, 2019, when no trace of her was found. Given the location and ocean conditions, it is presumed that Dunmire drowned, although her body has not been recovered.

Dunmire was last seen wearing a black short-sleeved dive suit, gray dive fins, and a black buoyancy compensator. She also had a black aluminum dive tank with her at the time of the dive. There were questions raised about potential currents in the area, as the Gulf Stream is known to meander closer to the Florida Keys at certain times of the year, creating challenging conditions for divers.
Last Seen: May 7, 2019

Arline Jacqueline Dunmire - The Charley Project

Missing Person / NamUs #MP57363 - Office of Justice Programs