Mercer Bay cliff area (File image)
Photo: RNZ/ Brad White
The man had been surfing at Karekare Beach in the morning but lost his board in a large wave and was swept onto rocks.
Unable to walk out through the tracks and after two hours of persisting, the man wrote the message in desperation.
Before collapsing, he was seen writing the message at Mercer Bay by a walker, who called United North Piha Surf Club about 3.30pm.
A Surf Life Saving rescue jetski set off from Piha with two lifeguards and first aid equipment to conduct a search.
The lifeguards found him and provided emergency first aid for his serious injuries.
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NSW beaches have been invaded by a âbloomâ of bluebottles swept onshore by a north-easterly wind that continued throughout Friday night, causing large numbers of beachgoers to be stung.
But for all the people complaining, the sight of their pearly sacs and their tentacles has some raving about their beauty.
Bluebottles, a type of jellyfish, have been spotted on the beaches up and down the coast, including Sydneyâs Narrabeen, Manly, Bondi and Maroubra beaches. They have also been blown onto other beaches in NSW, including Terrigal on the central coast, and Gerroa to the south.
A bluebottle just off the sand at Maroubra on Saturday.
The terrifying moment a pool of whaler sharks took over a popular beach - forcing officials to close off the beach to the public - has been captured on drone footage.
The Surf Life Saving drone spotted about 40 sharks on the NSW north coast at Evans Head during a routine aerial surveillance of the popular holiday spot around 11.30am on Wednesday.
Swimmers and surfers were escorted from the beach when the school of spinner, dusky and bull sharks were spotted.
A Surf Life saving drone has spotted a school of whaler sharks on the NSW north coast (pictured)
When the school of sharks were spotted (pictured) officials were forced to close off the beach to the public