4 shark bites in 48 hours: how what we do on land may shape shark behaviour
The Conversation • • world
Key Points:
- Four shark incidents in New South Wales, Australia, occurred within 48 hours following heavy rainfall, resulting in serious injuries to surfers and swimmers, some in critical condition.
- Research suggests heavy rainfall increases shark attacks by flushing nutrients into coastal waters, attracting fish and sharks, while reducing water visibility and disrupting shark sensory cues.
- Pollution from land, including pesticides and parasites like Toxoplasma gondii, can enter marine environments and may alter marine animal behavior, potentially influencing shark activity and ecosystem dynamics.
- Immediate risk reduction measures include public warnings and temporary beach closures after heavy rain, while long-term solutions focus on improving stormwater management and reducing coastal pollution to protect both public safety and ocean health.
- Understanding the complex interactions between human
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