Norfolk Island’s unique corals under triple threat from disease, El Niño and now government-approved dredging
Summary
Scientists warn that Norfolk Island’s coral reefs face serious threats from disease, pollution, a developing El Niño weather pattern, and a government-approved dredging project. These factors combined could cause permanent damage to the unique coral species found around the island.Key Facts
- Norfolk Island’s corals are threatened by a disease that causes white spots, killing coral flesh and leaving behind white skeletons.
- Pollution from cattle farming, land clearing, and wastewater is worsening coral disease and algae outbreaks.
- The island’s reefs have shown a threefold increase in diseased corals since March, with 30% to 50% affected over five years.
- The developing El Niño could raise water temperatures, risking coral bleaching and death.
- The federal government approved a plan in April 2025 to dredge a nearby shipping channel to improve port access, which may harm the reefs.
- Norfolk Island is a remote Australian territory located 1,600 km northeast of Sydney, with reefs around three bays.
- Local residents and scientists emphasize the coral reefs’ ecological and economic importance for tourism and the island community.
- Researchers believe many coral species on Norfolk Island have not yet been formally identified by science.
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