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Bull Sharks Keep Warming to Sydney's Waters
SYDNEY, NEW SOUTH WALES, AUSTRALIA, JUL 11 – Bull sharks are spending 15 more days each summer near Sydney beaches due to ocean warming, with potential to remain year-round, researchers report.
- Researchers tracked 92 migratory sharks near Sydney over 15 years and found bull sharks spend 15 more summer days off Sydney's coast than 15 years ago.
- The extended presence of sharks is linked to the rise in ocean temperatures near Sydney, which have increased by around 0.67°C over the period from 1982 to 2024, influencing shark activity in the area.
- Scientists also observed that climate change may shift bull sharks’ breeding patterns, with early evidence of juveniles appearing further south while great white summer habitats decline in northern NSW.
- Lubitz warned this trend could lead to year-round bull shark presence off Sydney in coming decades, advising increased public awareness despite shark attacks remaining rare in Australia.
- Non-Target species are frequently caught in shark nets, prompting councils to press for non-lethal methods while the government has not committed to removing nets yet.
52 Articles
52 Articles
Offshore of Australia's most populated city, rising ocean temperatures alter seasonal migration of squales, increasing the risk of interaction with humans.
Bull sharks stay longer and longer in front of Sydney's beaches, due to rising sea temperatures.
Long-term patterns of abundance, residency and movements of bull sharks (Carcharhinus leucas) in Sydney Harbour, Australia
Bull sharks (Carcharhinus leucas) are known to frequent nearshore environments, particularly estuaries, resulting in interactions with humans. Knowledge of the behaviour of large individuals in temperate, estuarine environments is limited. This acoustic telemetry study reports on residency and movement patterns of 40 sub-adult and adult bull sharks in Sydney Harbour, a large temperate estuary, over seven years. Bull sharks exhibited clear season…
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