• A 12-year-old boy is in critical condition following a shark attack in Sydney Harbour.
• Authorities believe a bull shark attacked the boy while he was swimming with friends.
• Heavy rainfall may have created ideal conditions for the shark's presence.
• This incident marks the third shark attack in Sydney within two days.
• Rescue efforts by friends and police have been praised as crucial to the boy's survival.

A 12-year-old boy is in critical condition after being mauled by a large shark during an outing at Sydney Harbour on Sunday. The attack occurred at Shark Beach in Vaucluse while the boy and his friends jumped from a 6-meter rock into the water. “We believe it was something like a bull shark that attacked the lower limbs of that boy,” said Superintendent Joseph McNulty, New South Wales marine area police commander, emphasizing the severity of the incident. Following the attack, the boy was pulled from the water and is currently in intensive care at Sydney Children’s Hospital, surrounded by family and friends, according to SCMP, BBC, and Channel News Asia.

The police confirmed that the boy sustained critical injuries to both his legs, prompting emergency services to administer first aid by applying tourniquets on site. The police were on the scene quickly and attempted resuscitation as they transported him to a waiting ambulance. “The actions of the young friends who pulled him from the water gave him a shot at survival,” McNulty noted, praising their bravery during the crisis, according to BBC and CBS News.

The conditions leading to the attack are believed to be linked to recent heavy rainfall, which caused the harbour to become murky with brackish water, creating an environment where sharks are more likely to enter after being drawn in by nutrient-rich runoff. “We believe the combination of the brackish water, the fresh water, the actions of the splashing may have made that perfect storm environment for that shark attack yesterday,” McNulty remarked, highlighting the complexity of the situation, according to Channel News Asia and CBS News.

This tragic incident is the third shark attack reported in Sydney within just two days, raising concerns about public safety at popular beaches. Following the boy's attack, a surfer in his twenties was hospitalized after being mauled in a separate attack, highlighting the current risks associated with swimming in the area. Authorities have warned the public against swimming in harbors or river systems due to increased shark activity, as noted by SCMP and CBS News.