Published: Oct 05, 2010 8:00 PM EDT
Updated: Oct 05, 2010 5:00 PM EDT

ORLANDO, Fla. (AP) - Authorities say the tourist who died after being found unresponsive in a pool at SeaWorld's Aquatica water park appears to have died from natural causes.

The Orange County Sheriff's Office says 68-year-old Ivan Henson had been visiting from England.

Lifeguards pulled Henson from the water Monday and attempted to revive him. He was taken to Dr. Phillips Hospital where he was later pronounced dead.

The medical examiner will determine Henson's cause of death, but investigators say preliminary information suggests he died of natural causes and not drowning.