Coral Bleaching - Barrel
 
   Corals at this dive site have experienced elevated temperatures 6 times in the past 5 years.
- Major stress - Bleaching: 04-Oct-2020 to 05-Jan-2021
- Major stress - Bleaching: 18-Sep-2021 to 23-Dec-2021
- Minor stress - Possible Bleaching: 12-Sep-2022 to 08-Dec-2022
- Extreme stress - Severe Bleaching and Significant Mortality: 07-Aug-2023 to 28-Jan-2024
-  Extreme stress - Severe Bleaching and Significant Mortality: 04-Aug-2024 to 10-Feb-2025
- Extreme stress - Severe Bleaching and Significant Mortality: 25-Aug-2025 to 02-Oct-2025
The most severe conditions for coral bleaching in the past 41 years peaked on 09-Nov-2024.  The DHW reached 22.0 C.
 
For information about why elevated temperatures are so damaging to corals, go to 
Coral Bleaching. 
    
Temperature record over the past 5 years
 
      
   
    Temperature record over the past 40 years
 
      
   
      The data on this page were last updated on 04-Jun-2025.  The next update is scheduled for 05-Jul-2025.