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Great Barrier Reef Suffers Record Coral Decline Due to Marine Heatwave

ReutersAugust 6, 20252 min2,880 views
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Record Coral Decline

  • πŸ“‰ The Great Barrier Reef has experienced its largest decline in coral cover in two of its three regions over the last year, according to the Australian Institute of Marine Science.
  • 🌑️ This sharp decline is attributed to a mass coral bleaching event driven by a global marine heatwave.

Extent of Bleaching and Loss

  • 🌊 In the northern Great Barrier Reef, coral cover dropped by approximately a quarter between 2024 and 2025.
  • πŸ’” The southern reef lost nearly one-third of its high coral cover, marking the largest decline ever recorded in these regions over 39 years of monitoring.
  • 🌍 The 2024 bleaching event had the largest footprint ever recorded, with high to extreme bleaching across all three regions of the reef.

Economic and Environmental Impact

  • 🐠 The Great Barrier Reef, the world's largest living ecosystem, contributes 4.2 billion annually to Australia's economy.
  • ⚠️ Ecologists warn of significant biodiversity loss if bleaching events continue.

Conservation and Climate Change

  • UNESCO has recommended the reef be added to the list of world heritage sites in danger, but Australia's government has lobbied against this to protect tourism.
  • 🏭 Climate change is identified as the biggest threat to coral reefs globally, and cutting greenhouse gas emissions is crucial for their future survival.
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Great Barrier ReefCoral BleachingMarine HeatwaveCoral Cover DeclineAustralian Institute of Marine ScienceClimate ChangeGreenhouse Gas EmissionsBiodiversity LossWorld Heritage SitesTourism Economy
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