A friend has confirmed that British man Simon Nellist was killed in shark attack in Sydney on Wednesday.
The city had almost reached 60 years without any fatal shark attacks.
The 35-year-old’s tragic death happened near Little Bay when he was mauled by a great white.
The majority of beaches have closed as authorities attempt to trace the shark.
Nellist, who was an experienced ocean swimmer and diving instructor, was training for a charity swim when he attacked from below near Buchan Point.
It is understood that he was engaged to be married.
Friend Della Ross told 7News: “”Everything that is connected to Simon is connected to the ocean.”
Ross added: “The news hit us like a truck because he was one of the people who make this earth lighter.”
Surf lifesavers on jet skis, helicopters and drones are being used to search for the shark from Bondi in the city’s east to Cronulla in the south.
The Malabar Magic Ocean Swim has cancelled the planned event on Sunday “out of respect.”
The organising committee said: “The organising committee extends our thoughts and prayers to the family of the swimmer who was so tragically taken yesterday.
“Out of respect for the swimmer and his family, and following wide consultation with Randwick Council and experienced senior Surf Life Saving personnel, we believe that cancelling the 2022 swim is appropriate.”
Police are yet to formally identify the victim, and are appealing for information from anyone who may have seen him before or during the incident.
In a statement, North South Wales Police Force said: “Detectives from the Marine Area Command are appealing for information as they continue to investigate a fatal shark attack at Little Bay yesterday.
“About 4.35pm (16 February 2022), emergency services were called to the Little Bay northern headland after reports a swimmer had been attacked by a shark.
“Officers attached to Eastern Beaches Police Area Command with assistance from the MAC and Surf Life Saving NSW attended and located human remains in the water.
“The swimmer is yet to be formally identified but is believed to have been a 35-year-old man from Wolli Creek.”
Shark attacks in Australia are more common at this time of year, because the warmer weather encourages people into the water.
New South Wales state government has invested millions in technology in hopes of reducing shark attacks along the coast.
Shark listening stations can tell when great white sharks are near and send an alert.
Speaking to ABC, the area’s state MP Michael Daley said the victim was a regular swimmer there.
Locals are reported to be shaken by the “horrific” event and there’s a “real dark pal hanging over our community today.”