PHUKET: A 78-year-old American snorkeler died from a heart attack in the Similan Island National Park on Tuesday, a doctor at Thai Muang Hospital confirmed to the Phuket Gazette yesterday.

Officers of the Royal Thai Navy, keeping any eye on tourists in the water from the beach, did not spot William Aloyuisus McCleary’s motionless body at first, as it was out of sight behind a boulder, Royal Thai Navy Commander Sombat Saengchaiyaphum explained.

“An officer on a patrol rib spotted him and alerted those on the beach,” Lt Cdr Sombat said.