A fourth shark attack in just 48 hours has left a surfer injured on Australia's New South Wales (NSW) coastline. The 39-year-old man suffered a wound to his chest after a shark bit his surfboard near the Point Plomer campground, about 450km north of Sydney.
This latest incident follows three other shark attacks in Sydney over the past two days, leaving residents and authorities on high alert. All beaches in Sydney's northern area will remain closed until further notice, said police.
Experts say bull sharks are likely responsible for most of the recent attacks. These sharks can be found in both freshwater and saltwater environments and are considered one of the few shark species that pose a significant threat to humans.
The attacks come as Australia experiences heavy rainfall, which has decreased water quality and visibility. Authorities warn that this can concentrate fish that bull sharks prey on downstream in rivers and beaches, making them more likely to be found in areas where people swim or surf.
While shark attacks are rare, the recent series of incidents in NSW is highly unusual. "This series of bites from bull sharks in such a short period of time is highly unusual," said Dr Daryl McPhee, an associate professor of environmental science at Bond University.
The incidents have sparked debate over the use of controversial shark nets in Australia. While some argue that they can reduce the risk of shark attacks, others claim that they are ineffective and cause more harm to marine life than good.
In a recent fatal attack, a woman was killed by a shark on a beach in NSW. The incident has revived the debate over shark netting, with some calling for their use to be increased while others argue that they should be banned altogether.
Despite the risks, many people continue to enjoy surfing and swimming in Australia's coastal waters. Authorities are urging residents and visitors to exercise caution when swimming or surfing in areas where sharks have been spotted.
The incident serves as a reminder of the importance of shark conservation efforts and the need for continued research into these powerful predators.
This latest incident follows three other shark attacks in Sydney over the past two days, leaving residents and authorities on high alert. All beaches in Sydney's northern area will remain closed until further notice, said police.
Experts say bull sharks are likely responsible for most of the recent attacks. These sharks can be found in both freshwater and saltwater environments and are considered one of the few shark species that pose a significant threat to humans.
The attacks come as Australia experiences heavy rainfall, which has decreased water quality and visibility. Authorities warn that this can concentrate fish that bull sharks prey on downstream in rivers and beaches, making them more likely to be found in areas where people swim or surf.
While shark attacks are rare, the recent series of incidents in NSW is highly unusual. "This series of bites from bull sharks in such a short period of time is highly unusual," said Dr Daryl McPhee, an associate professor of environmental science at Bond University.
The incidents have sparked debate over the use of controversial shark nets in Australia. While some argue that they can reduce the risk of shark attacks, others claim that they are ineffective and cause more harm to marine life than good.
In a recent fatal attack, a woman was killed by a shark on a beach in NSW. The incident has revived the debate over shark netting, with some calling for their use to be increased while others argue that they should be banned altogether.
Despite the risks, many people continue to enjoy surfing and swimming in Australia's coastal waters. Authorities are urging residents and visitors to exercise caution when swimming or surfing in areas where sharks have been spotted.
The incident serves as a reminder of the importance of shark conservation efforts and the need for continued research into these powerful predators.