Coast Guard officials have found the body of a man who disappeared while boating in the Everglades.

William Crick, a 66-year-old Palm Beach Gardens man, was found dead in the Shark River area on the west end of Everglades National Park.

Crick was last seen alive in Oyster Bay around 2:30 p.m. Saturday, near the southern tip of the peninsula, where he rented a house boat with a flats boat attached, which is ideal for fishing in water less than two feet deep.

Crick’s brother-in-law, whose name was not disclosed, saw Crick dive into the water to recover the fishing boat that broke loose from his vessel on Saturday afternoon.

Once he got in the water, Crick couldn’t stay afloat. The witness said he went to get a life jacket for the struggling swimmer. When he returned, he did not see Crick resurface.

A call was made to the Miami Police Department who directed the emergency to the Key West command center for the National Coast Guard.

The Coast Guard Station notified the National Park Service and authorized three aircraft searches Saturday evening.

Despite hours of searching the swamp waters from the air, the body could not be found.

Crews made a “first light” search Sunday at sunrise for the missing boater. Crick’s body was found .4 miles from the rented house boat, according to petty officer for District 7 Coast Guard station Jon-Paul Rios.

Crick’s body was recovered by the National Park Service.