A man drowned after he and a woman were caught in a rip current, authorities said.

The U.S. National Park Service reports that a witness saw the two people caught in a current Friday afternoon on a section of the Gulf Islands National Seashore.

The witness called 911, and lifeguards stationed 300 yards away responded.

The 59-year-old man from Robertsdale, Ala., was pulled him from the water by lifeguards and transported by helicopter to a nearby hospital. He was later pronounced dead.

Authorities say the woman caught in the rip current off Perdido Key, near Pensacola, was the 20-year-old daughter of the man's girlfriend. She was treated at the scene.

The victims' names haven't been released.