Global Shark Bites Flat, But Australia Sees Rise
Shark bites are traumatic events that can spark fear and anger. Globally, the number of unprovoked incidents has remained stable for decades, with 65 reported last year. The 10-year average is 72 bites annually, similar to the 20- and 30-year averages. However, in Australia, the trend is different. During the 2000s, there were 12 bites per year; this decade, the number has risen to 21.
Recent Incidents Near Sydney
A spate of serious and deadly bites near Sydney's famous beaches has raised concerns. Earlier this year, bull sharks were involved. In June, a suspected white shark caused life-changing injuries to 34-year-old Leah Stewart, who underwent multiple surgeries including amputation of her arm. She remains hospitalized but is no longer in critical condition. These incidents have left swimmers and surfers on edge, with some choosing to avoid the water altogether.
Why Are Bites Increasing?
Experts point to several possible factors. Rob Harcourt, leader of the marine predator research group at Macquarie University, notes that Australia's population has grown by 7 million in 20 years, leading to more people in the water. Warming waters are altering shark behavior, with tiger and bull sharks staying longer in the Sydney area each year. Additionally, increasing humpback whale populations and recovering seal numbers attract large sharks, which may mistake humans for prey.
Culling Controversy
Each bite prompts calls for shark culling, notably from former Prime Minister Tony Abbott. However, experts argue there is no evidence of a shark population explosion. Shark nets and baited lines are controversial, as they trap other marine species and may not reduce risk. Many emphasize sharks' vital role in ocean ecosystems.
Risk Remains Extremely Low
Despite the rise, the risk of being bitten is incredibly small. Australia recorded five shark bite deaths last year, compared to 82 drownings at beaches. Fear of sharks is understandable but disproportionate. Reporting on bites is challenging, but the question of why bites are rising in Australia remains complex, with no clear answer.
