Help Reduce Bleaching

You can help minimize the extent of bleaching! The State of Hawaiʻi Division of Aquatic Resources (Hawaiʻi-DAR) has asked all ocean users to reduce secondary stress on coral reefs. Check out our infographics for details on secondary stressors, and remember to:

  1. Let fish protect reefs
  2. Give corals their space
  3. Stand on the sand
  4. Use reef-safe sunscreen
  5. Contain any chemicals
  6. Anchor away from reefs

You can also help by reporting if you see bleaching, which will be immediately communicated to us, Hawaiʻi-DAR, and the conservation community.

Learn More

What is coral bleaching?

As our planet warms due to climate change, ocean heatwaves are becoming more and more common. Ocean heatwaves are the main cause of coral bleaching that leads to coral death, and the Hawaiian Islands are now entering ocean heatwave conditions - the National Oceanic and Atmospheric Coral Reef Watch has upgraded current alert levels to their highest setting.

About this effort

This website provides real-time updates on the locations of probable coral bleaching caused by the 2019 ocean heatwave. Here, for the first time in the world, we combine citizen science, expert science, and satellite imagery to track the effects of the ocean heatwave on coral reefs. Powered by more than 100 Planet Lab satellites, 300 miles up in Earth orbit, we are monitoring all of Hawaiʻi's coral reefs every day, providing a weekly update on any bleaching that we detect.

In parallel to our satellite monitoring, we have deployed our aircraft, watercraft, and field teams across the Hawaiian Islands to map corals and to identify bleaching. We need this information to verify the satellite information, identify locations of particular concern, and to help keep community members in Hawaiʻi informed about their reefs and how to protect them.