Authorities are searching for a 34-year old Alabama woman who went missing in the Gulf Sunday morning.

The Walton, Florida Sheriff’s Office received a 911 call shortly before noon Sunday regarding a diver who had not resurfaced after diving in water 3 miles due south of Grayton Beach. Sheriff’s officials said the woman, identified as Marie Kaas of Madison, had been offshore on a 26-foot Catamaran when she entered the water in her dive gear.

Florida Fish and Wildlife, South Walton Fire District and the U.S. Coast Guard are all participating in the search by boat and aircraft.