
The man, who was aged in his 30s, was rescued along with his wife and two-year-old daughter at Fistral Beach on the county's northwestern coast.
Two other children in the family had managed to scramble onto rocks.
Lifeguards attended the scene late on Friday afternoon and carried out CPR on the man before he was airlifted to Treliske Hospital.
The Maritime and Coastguard Agency said he died there last night.
His wife, who sustained minor injuries, and daughter were also taken to hospital, as were the other children.

Detective Constable Jarrod Yewen of Newquay CID said: "We would like to speak to anyone who was on the beach at the time."
The Met Office has issued a yellow weather warning for most of England and Wales as a low-pressure system moves in from the west, with winds expected to reach 40 to 50mph inland.
Amid the treacherous conditions, thrill-seekers have been filming themselves and taking photos.
The Environment Agency's flood risk manager, Craig Woolhouse said: "We urge people to stay safe on the coast and warn wave-watchers against the unnecessary dangers of taking 'storm selfies'."

The weather has caused events including the Bournemouth Air Festival to be cancelled at short notice.
A spokesman said: "Yesterday's exceptionally high water levels are known to have damaged the beach stage areas."
But conditions are expected to improve before the bank holiday weekend.
"Autumn has not arrived with this bit of wind," said Nicola Maxey from the Met Office.
"There's certainly some more sunshine around for next week depending on where you are in the country.
"It's a low-pressure system passing through. It's not the end of summer."
No comments:
Post a Comment