Philippine Coral Bleaching Watch

07/11/2025

𝖁𝖎𝖇𝖗𝖆𝖓𝖙 𝕮𝖔𝖗𝖆𝖑𝖘🌈🪸 vs 𝔹𝕝𝕖𝕒𝕔𝕙𝕖𝕕 ℂ𝕠𝕣𝕒𝕝𝕤⬜🪸

𝖂𝖍𝖆𝖙 𝖆𝖗𝖊 𝖙𝖍𝖊𝖎𝖗 𝖉𝖎𝖋𝖋𝖊𝖗𝖊𝖓𝖈𝖊𝖘?🧐

𝓣𝓪𝔂𝓸 𝓪𝓷𝓰 𝓢𝓸𝓵𝓾𝓼𝔂𝓸𝓷 ✨

24/09/2025

24 September 2025 Bleaching Alert Update


Alert level ‘Watch’ (Yellow) across several areas in the Philippines which means that bleaching is likely to progress.

Possible bleaching with Alert Level ‘Warning’ (Orange) in some parts of North Eastern Luzon and Southern Mindanao

For patrollers who have access to a reef, please be our eyes underwater and continue to MONITOR OUR REEFS for bleaching or no bleaching. 🐟🐠 We also need to monitor our healthy reefs!

We are transitioning to a new reporting platform, kindly send photos for validation, and documentation at this form link: https://tinyurl.com/phcoralreefreport

Here is the Bleaching Alert Level guide based on NOAA.

🟨 Alert level ‘Watch’ - Yellow (low thermal stress, possible bleaching is likely to progress)
🟧Alert level ‘Warning’ - Orange(thermal stress accumulating, possible bleaching)
🟥Alert level 1 - Red (bleaching expected, bleaching likely happening)
🟥 🔥Alert level 2 - Dark Red (significant bleaching expected, coral mortality likely)

For those who already submitted reports, continue to monitor whether previously bleached reefs have recovered in your area, and submit a report again for us to properly document recovery. These stories of recovery could give us hope and could save Philippine reefs in the long run! 🙂

________________________________________
What is CORAL BLEACHING? 🐟🐠

Coral bleaching is a response to an environmental stress including changes in ocean temperature, coral predation, coral diseases, pollution, among others. During a bleaching event, corals expel zooxanthellae (their source of nutrients) to relieve itself from the stress, and as a result, the corals will lose their color and appear to be white or pale. Massive coral bleaching occurs where there are unusually high sea surface temperature (SST) called SST anomalies.



Screengrab from National Oceanic and Atmospheric Administration (NOAA)Coral Reef Watch 5km Virtual Stations:
https://coralreefwatch.noaa.gov/product/vs/map_full.html

04/06/2025

⚠️ 4 June 2025 Bleaching Alert Update


Heat stress 🔥continues to accumulate.

Bleaching is likely happening in areas with Alert Level 1 (Red)
-CALABARZON (i.e Tayabas bay)
-Guimaras Strait
-Sibuguey Bay, off Zamboanga

Possible bleaching with Alert Level ‘Warning’ (Orange) in parts of Northern Luzon, Central Visayas, and Southern Mindanao

Refer to the map for more detailed areas.

For patrollers who have access to a reef, please be our eyes underwater and continue to MONITOR OUR REEFS for bleaching or no bleaching. 🐟🐠

Reporting link: We are slowly transitioning to a new reporting platform, kindly send photos for validation, and documentation at this form link (google sign in required): https://tinyurl.com/phcoralreefreport

Here is the Bleaching Alert Level guide based on NOAA.

🟨 Alert level ‘Watch’ - Yellow (low thermal stress, possible bleaching is likely to progress)
🟧Alert level ‘Warning’ - Orange(thermal stress accumulating, possible bleaching)
🟥Alert level 1 - Red (bleaching expected, bleaching likely happening)
🟥 🔥Alert level 2 - Dark Red (significant bleaching expected, coral mortality likely)

For those who already submitted reports, continue to monitor whether previously bleached reefs have recovered in your area, and submit a report again for us to properly document recovery. These stories of recovery could give us hope and could save Philippine reefs in the long run! 🙂

________________________________________
What is CORAL BLEACHING? 🐟🐠

Coral bleaching is a response to an environmental stress including changes in ocean temperature, coral predation, coral diseases, pollution, among others. During a bleaching event, corals expel zooxanthellae (their source of nutrients) to relieve itself from the stress, and as a result, the corals will lose their color and appear to be white or pale. Massive coral bleaching occurs where there are unusually high sea surface temperature (SST) called SST anomalies.



Screengrab from National Oceanic and Atmospheric Administration (NOAA)Coral Reef Watch 5km Virtual Stations:
https://coralreefwatch.noaa.gov/product/vs/map_full.html

28/05/2025

⚠️ 28 May 2025 Bleaching Alert Update


Heat stress 🔥continues to accumulate in Northern Luzon including Ilocos, Cagayan, Quezon, Pangasinan, Zambales, parts of Palawan, Mindoro, Bicol, Masbate, parts of Central Visayas including west of Panay and Negros, and Southern Mindanao particularly off Sibuguey Bay, Zambaonga, Basilan and Davao Gulf. Refer to the map for more detailed areas.

For patrollers who have access to a reef, please be our eyes underwater and continue to MONITOR OUR REEFS for bleaching or no bleaching. 🐟🐠

Reporting link: We are slowly transitioning to a new reporting platform, kindly send photos for validation, and documentation at this form link (google sign in required): https://tinyurl.com/phcoralreefreport

Here is the Bleaching Alert Level guide based on NOAA.

🟨 Alert level ‘Watch’ - Yellow (low thermal stress, possible bleaching is likely to progress)
🟧Alert level ‘Warning’ - Orange(thermal stress accumulating, possible bleaching)
🟥Alert level 1 - Red (bleaching expected, bleaching likely happening)
🟥 🔥Alert level 2 - Dark Red (significant bleaching expected, coral mortality likely)

For those who already submitted reports, continue to monitor whether previously bleached reefs have recovered in your area, and submit a report again for us to properly document recovery. These stories of recovery could give us hope and could save Philippine reefs in the long run! 🙂

________________________________________
What is CORAL BLEACHING? 🐟🐠

Coral bleaching is a response to an environmental stress including changes in ocean temperature, coral predation, coral diseases, pollution, among others. During a bleaching event, corals expel zooxanthellae (their source of nutrients) to relieve itself from the stress, and as a result, the corals will lose their color and appear to be white or pale. Massive coral bleaching occurs where there are unusually high sea surface temperature (SST) called SST anomalies.



Screengrab from National Oceanic and Atmospheric Administration (NOAA)Coral Reef Watch 5km Virtual Stations:
https://coralreefwatch.noaa.gov/product/vs/map_full.html

21/05/2025

⚠️ 21 May 2025 Bleaching Alert Update


Heat stress 🔥continues to accumulate in Northern Luzon including Ilocos, Cagayan, Quezon, Pangasinan, Zambales, Palawan, Mindoro, Bicol, Masbate, parts of Central Visayas including Panay, Negros, Cebu, Bohol, and Southern Mindanao particularly off Sibuguey Bay, Zambaonga, Basilan and Davao Gulf. Refer to the map for more detailed areas.

For patrollers who have access to a reef, please be our eyes underwater and continue to MONITOR OUR REEFS for bleaching or no bleaching. 🐟🐠

Reporting link: We are slowly transitioning to a new reporting platform, kindly send photos for validation, and documentation at this form link (google sign in required): https://tinyurl.com/phcoralreefreport

Here is the Bleaching Alert Level guide based on NOAA.

🟨 Alert level ‘Watch’ - Yellow (low thermal stress, possible bleaching is likely to progress)
🟧Alert level ‘Warning’ - Orange(thermal stress accumulating, possible bleaching)
🟥Alert level 1 - Red (bleaching expected, bleaching likely happening)
🟥 🔥Alert level 2 - Dark Red (significant bleaching expected, coral mortality likely)

For those who already submitted reports, continue to monitor whether previously bleached reefs have recovered in your area, and submit a report again for us to properly document recovery. These stories of recovery could give us hope and could save Philippine reefs in the long run! 🙂

________________________________________
What is CORAL BLEACHING? 🐟🐠

Coral bleaching is a response to an environmental stress including changes in ocean temperature, coral predation, coral diseases, pollution, among others. During a bleaching event, corals expel zooxanthellae (their source of nutrients) to relieve itself from the stress, and as a result, the corals will lose their color and appear to be white or pale. Massive coral bleaching occurs where there are unusually high sea surface temperature (SST) called SST anomalies.



Screengrab from National Oceanic and Atmospheric Administration (NOAA)Coral Reef Watch 5km Virtual Stations:
https://coralreefwatch.noaa.gov/product/vs/map_full.html

16/05/2025

⚠️ 16 May 2025 Bleaching Alert Update

Heat stress is accumulating in parts of Pangasinan, Zambales, Palawan, Mindoro, Bicol, Central Visayas and Southern Mindanao.

Are you diving this weekend? 🤿
Be our EYES on the reef! 🥽

For patrollers who have access to a reef, please be our eyes underwater and continue to MONITOR OUR REEFS for bleaching or no bleaching. 🐟🐠

Here is the Bleaching Alert Level guide based on NOAA. Refer to the map for more detailed areas.

🟨 Alert level ‘Watch’ - Yellow (low thermal stress, possible bleaching is likely to progress)
🟧Alert level ‘Warning’ - Orange(thermal stress accumulating, possible bleaching)
🟥Alert level 1 - Red (bleaching expected, bleaching likely happening)
🟥 🔥Alert level 2 - Dark Red (significant bleaching expected, coral mortality likely)

Reporting link: Since we are slowly transitioning to a new reporting platform, kindly send photos for validation, and documentation at this form link (google sign in required): https://tinyurl.com/phcoralreefreport

For those who already submitted reports, continue to monitor whether previously bleached reefs have recovered in your area, and submit a report again for us to properly document recovery. These stories of recovery could give us hope and could save Philippine reefs in the long run! 🙂

________________________________________
What is CORAL BLEACHING? 🐟🐠

Coral bleaching is a response to an environmental stress including changes in ocean temperature, coral predation, coral diseases, pollution, among others. During a bleaching event, corals expel zooxanthellae (their source of nutrients) to relieve itself from the stress, and as a result, the corals will lose their color and appear to be white or pale. Massive coral bleaching occurs where there are unusually high sea surface temperature (SST) called SST anomalies.



Screengrab from National Oceanic and Atmospheric Administration (NOAA)Coral Reef Watch 5km Virtual Stations:
https://coralreefwatch.noaa.gov/product/vs/map_full.html

23/04/2025

⚠️ 23 April 2025 Bleaching Alert Update

Possible bleaching is hapenning in parts of Southern Mindanao, particularly off Zamboanga and Sibuguey Bay.

Here is the Bleaching Alert Level guide based on NOAA. Refer to the map for more detailed areas.

🟨 Alert level ‘Watch’ - Yellow (low thermal stress, possible bleaching is likely to progress)
🟧Alert level ‘Warning’ - Orange(thermal stress accumulating, possible bleaching)
🟥Alert level 1 - Red (bleaching expected, bleaching likely happening)
🟥 🔥Alert level 2 - Dark Red (significant bleaching expected, coral mortality likely)

What can we do?

Be our EYES on the reef! 🥽

For patrollers who have access to a reef, please be our eyes underwater and continue to MONITOR OUR REEFS for bleaching or no bleaching. 🐟🐠

Reporting link: Since we are slowly transitioning to a new reporting platform, kindly send photos for validation, and documentation at this form link (google sign in required): https://tinyurl.com/phcoralreefreport

For those who already submitted reports, continue to monitor whether previously bleached reefs have recovered in your area, and submit a report again for us to properly document recovery. These stories of recovery could give us hope and could save Philippine reefs in the long run! 🙂

________________________________________
What is CORAL BLEACHING? 🐟🐠

Coral bleaching is a response to an environmental stress including changes in ocean temperature, coral predation, coral diseases, pollution, among others. During a bleaching event, corals expel zooxanthellae (their source of nutrients) to relieve itself from the stress, and as a result, the corals will lose their color and appear to be white or pale. Massive coral bleaching occurs where there are unusually high sea surface temperature (SST) called SST anomalies.



Screengrab from National Oceanic and Atmospheric Administration (NOAA)Coral Reef Watch 5km Virtual Stations:
https://coralreefwatch.noaa.gov/product/vs/map_full.html

22/04/2025

Today is Earth Day (April 22)

This Earth Day, let us be reminded of how fragile and vital coral reefs are—bustling cities beneath the sea, teeming with life, yet threatened by warming oceans, coral bleaching, and ocean pollution, among others. Let’s protect what protects us.

Check out the infographic below to learn more about coral bleaching.🐠🐟

09/04/2025

18/03/2025

Marine Protected Areas (MPAs) are crucial for maintaining biodiversity, sustainable fisheries, and climate resilience. 🐟🐠

After a coral bleaching event, MPAs can help coral reefs recover from bleaching by protecting the reef from other stressors.

OceanConservation