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Sharks Closer: Ocean Warming Drives New Beach Fears
21 Jun
Summary
- Warming oceans cause sharks to frequent popular human areas more often.
- Australia's shark bite incidents have sharply increased since the 2000s.
- Shark nets show no significant change in numbers despite rising bites.

Ocean warming is compelling sharks to spend more time in areas frequented by humans, leading to increased public anxiety. In Australia, shark bite incidents have risen significantly, with an average of 21 incidents per year in the current decade compared to 3.1 in the 1950s. Despite this trend, shark net data reveals no substantial changes in shark numbers, challenging claims of exploding populations.
Experts note that bull and tiger sharks favor warmer waters, and the recovery of seal and whale populations provides more food sources for larger sharks. While the exact reasons for the rise in bites remain uncertain, the trend is consistent with public perceptions. However, shark bites are statistically rare compared to drownings, but their perceived uncontrollability amplifies public fear.
Various safety measures are being explored, including drone monitoring and 'listening stations' for tagged sharks. However, shark nets, used for over 80 years, are criticized as environmentally damaging with no proven effectiveness in reducing bites. Experts emphasize that sharks are migratory, making culls an unlikely solution, and advocate for understanding rather than attempting to control nature.