ISLAMORDA (CBSMiami) – An afternoon exploring a Florida Keys reef ended Thursday in the death of a central Florida woman.

Merritt Island resident Joy Meyers, 54, was diving with a group of divers and a guide on Patch reef at a depth of about 23 feet when she indicated she was having some kind of trouble.

The Key Dives of Islamorada guide escorted her to the surface. She got back on board the boat around 2 p.m. and the guide returned to the water to continue with the other divers. Meyers, who sat down on a bench and began removing her gear, said she was “feeling tired”.

A short time later, a crew member noticed she was sitting on the bench with her chin on her chest. He checked her and she was not breathing. The other divers were called back to the boat and CPR was begun on Meyers.

The boat returned to the dock, meeting paramedics at Bud and Mary’s Marina. Meyers was taken to Mariner’s Hospital where she was declared dead. The Medical Examiner will determine the cause of death.