Discover coral reefs

Hawaiicoral.org is your premier destination to learn all about Hawaiʻi’s 1200 miles of coral reefs and how to help protect them. Our Ko‘a Corps unites citizen scientists like you with local research scientists and government agencies to ensure a holistic approach to reef conservation and action. Please join our inclusive community and help secure a promising future for these vital ecosystems.

Are Coral Reefs Bleaching in your area?

Help our scientists mitigate secondary stress to vulnerable reefs by reporting coral bleaching using our interactive tool.

The coral classroom

Coral class is in session!
We’ve curated the best reef resources available to help you learn all about coral reef ecosystems.

What is Coral Disease?

What is Coral Disease?

Bryant Grady, Graduate Student Center for Global Discovery and Conservation Science at Arizona State University  Dive in with this episode's guest, Bryant Grady. Nicknamed the underwater doctor, Bryant is a graduate student at the Center for Global Discovery and...

read more
What is the Role of Herbivores in Coral Reefs?

What is the Role of Herbivores in Coral Reefs?

Chris Teague, Aquatic biologist Hawaiʻi Division of Aquatic Resources  Join Chris Teague under the waves of South Kona to explore the interconnectedness of reef herbivores and coral reef ecosystems. You will be introduced to finger coral, lobe coral and the four...

read more
How do corals get their color?

How do corals get their color?

Robin Martin, ASSOCIATE PROFESSOR Center for Global Discovery and Conservation Science at Arizona State University  Take a dive along Hawaii’s beautiful Kona Coast on the Big Island with Dr. Robin Martin, Associate Professor at ASU, to learn how corals get their...

read more

Explore our Coral Maps

See Hawaiʻi’s reefs as you never have before with cutting-edge technology.

Outreach and Publications

GDCS NEWS

ASU center announces Hawaii coral reef conservation program

Media coverage

A map to saving coral reefs: the Allen Coral Atlas projects

outreach

Rapid repeat monitoring of reef threats.

gdcs news

asu center announces hawaii coral reef conservation program

Media coverage

A map to saving coral reefs: the Allen Coral Atlas projects

outreach

Rapid repeat monitoring of reef threats.

Instagram gallery

What is Coral disease? Coral disease affects three main factors, the algae, the animal, and the microbiome. Learn more from Bryant Grady, underwater doctor and grad student at the Center for Global Discovery and Conservation Science.

What is Coral disease? Coral disease affects three main factors, the algae, the animal, and the microbiome. Learn more from Bryant Grady, underwater doctor and grad student at the Center for Global Discovery and Conservation Science. ...

The GAO or Global Airborne Observatory uses a camera and sensor array mounted on a Dornier 228-202 to map natural environments for ecological research. 
This lab in the sky mapped out the live coral in Hawaii! You can check it out at hawaiicoral.org (link in bio)
📸 Greg Asner

The GAO or Global Airborne Observatory uses a camera and sensor array mounted on a Dornier 228-202 to map natural environments for ecological research.
This lab in the sky mapped out the live coral in Hawaii! You can check it out at hawaiicoral.org (link in bio)
📸 Greg Asner
...

In the ocean in Hawaii, it is common to spot coral that isn’t its usual vibrant color. This phenomenon is called coral bleaching. When coral is stressed, a microscopic algae called zooxanthellae leaves the coral, and is no longer providing coral with critical nutrients through photosynthesis.

📸 The Ocean Agency / Ocean Image Bank

In the ocean in Hawaii, it is common to spot coral that isn’t its usual vibrant color. This phenomenon is called coral bleaching. When coral is stressed, a microscopic algae called zooxanthellae leaves the coral, and is no longer providing coral with critical nutrients through photosynthesis.

📸 The Ocean Agency / Ocean Image Bank
...

Did you know? High numbers of herbivorous fish help to promote a healthy coral reef. Like cattle grazing on a pasture, the fish graze on the turf algae, controlling the turf algae’s growth.

Did you know? High numbers of herbivorous fish help to promote a healthy coral reef. Like cattle grazing on a pasture, the fish graze on the turf algae, controlling the turf algae’s growth. ...

Mahalo Pop’s Spearfishing for helping us to care for our coral. 

📸 @rachel.r.carlson

Mahalo Pop’s Spearfishing for helping us to care for our coral.

📸 @rachel.r.carlson
...

Join the Ko‘a Corps