All beaches in the Northern Beaches, a council area straddling the city's northern coastline, will remain closed until further notice, police said.

A 12-year-old boy is fighting for his life after a catastrophic shark attack in Sydney Harbor. He was rescued by heroic friends who leaped from a cliff to save him.

The predator bit the boy, believed to be about 13 years old, during the late afternoon off Shark Beach, police said.

A 12-year-old mauled by a shark in Australia’s Sydney Harbour has been identified as Nico Antic, with a family friend saying the boy had suffered “devastating injuries”. Antic was attacked on Sunday afternoon while swimming with friends near Shark Beach in Vaucluse, an affluent harbourside suburb in Sydney’s east.

A surfer had minor injuries from being bitten by a shark in the fourth attack off the coast of Australia’s most populous state in three days.

A surfer was attacked one day after a large shark bit a 12-year-old boy in the legs, leaving him fighting for survival in a hospital.

Dublin man Brian Burns joined of team of first responders after he came across a man who had been bitten by a shark.

Nico Antic was one of four shark attack victims this week in New South Wales, Australia. Friends and family recently provided updates on his condition.