Saving Hawai‘i’s coral reefs

We have led coral reef conservation efforts in the main Hawaiian Islands for over 15 years. Since 2006, we have designed our program in Hawaiʻi to protect and seed the coral reefs of Hawaiʻi’s future.

We are focused on preventing land-based pollution from entering the ocean on Maui and Hawaiʻi islands, and we are one of only two NGOs that sit on the statewide Cesspool Conversion Working Group to help the state transition toward more efficient wastewater treatment systems. Clean water is critical to coral reef health, and water pollution not only threatens our existing reefs but prevents them from adapting to the effects of climate change.

A treasure like no other

Hawaiʻi is a crucial site for global coral reef conservation. Its islands are home to one of the highest concentrations of endemic marine species anywhere on Earth and 85% of the United States’ coral reefs.

These reefs are central to the local culture, forming the foundation behind many traditions, foods, sacred ceremonies, and leisure activities. Hawaiʻi’s reefs contribute over $800 million to the economy each year through tourism and serve as a natural barrier that protects people and coastal property from storm surges and floods. The U.S. Geological Survey calculated that the economic value of shoreline protection in Hawaiʻi from coral reefs is worth $836 million annually.

An ecosystem under threat

Hawaiʻi’s reefs face major global and local threats including climate change, overfishing, and sediment and nutrient pollution caused by sewage and stormwater runoff.

Across the Hawaiian Islands, 88,000 cesspools release an estimated 53 million gallons of raw sewage into Hawaiʻi’s waterways every day. Sewage pollution contributes to high nutrient, bacterial, and pathogen levels in the nearshore marine environment—a serious health hazard to people and reefs. On Hawaiʻi Island, sewage pollution has been identified as the biggest contributor to declining fish biomass and has been specifically linked to coral disease and bleaching, as well as human health issues.

In other parts of the island chain, such as West Maui, mountain slopes that historically supported pineapple and sugar cane plantations are now out of use, and what remains is degraded and hardpacked soil. When it rains, flash floods carry stormwater and large amounts of sediment downstream to the ocean. Just offshore, once-thriving coral reefs are now struggling to survive. West Maui has been designated a priority conservation site by both the state and federal government in an effort to address land-based pollution and corresponding declines in coral cover. Due to historical patterns of ocean currents, these corals are critical sources of larvae for reefs on several nearby islands, including Lānaiʻi, Molokaʻi, and Kahoʻolawe.

Hawai‘i Program Staff

When Hawai’i’s reefs thrive, so do communities

Coral reefs are a source of life and inspiration, particularly in Hawai’i where they play such a significant role in Hawaiian culture. We can all play a role in keeping coral reefs healthy, and protecting these underwater treasures for generations to come.

Hawai’i Stories

Using Native Plants to Protect Coral Reefs

In West Maui, Hawai‘i, CORAL’s Senior Program Manager Jennifer Vander Veur shares how our actions on land can impact what happens under the sea. Run-off sediment is threatening nearby coral reefs and making it harder for them to survive. To address this problem, Vander Veur leads our efforts to protect coral reefs by using native… Continue Reading →

IUCN World Conservation Congress

CORAL’s Perspective: Highlights from IUCN’s World Conservation Congress

From raging wildfires to melting glaciers to coral bleaching—it is clear that there is pressing urgency to face the planet’s climate and ecological emergency. After postponing last year’s event due to COVID-19, the International Union for Conservation of Nature (IUCN) decided to hold its quadrennial World Conservation Congress from September 3 to 11, 2021 and commit to actions that… Continue Reading →

coastline in maui hawaii

CORAL Joins Maui Nui Makai Network

The Coral Reef Alliance (CORAL) is honored to join the Maui Nui Makai Network—a network of community groups from across Maui Nui that protect and care for marine and coastal ecosystems. The network was established in 2013 when community organizations decided they would be stronger working together than separately. Network members meet regularly to learn… Continue Reading →

Manuel Mejia

Dive In With Manuel Mejia

Born in the Philippines and long-time resident of Hawai‘i, Manuel Mejia, our Hawai‘i Regional Program Director, harvests a deep passion for coral reefs and our need to protect them. We recently had the opportunity to sit down with him and dive in to this passion a little more. Q: Where does your passion for the… Continue Reading →

Sun shines through the water on a coral reef in West Maui, Hawaii

New Partnership Between CORAL and Hawaiian Electric Industries

We’re thrilled to be one of four nonprofits included in Hawaiian Electric Industries’s (HEI) ongoing commitment to protecting and preserving Hawai‘i’s natural environment. This new partnership will allow us to address our highest priority needs in our Hawai‘i program over the next year. This includes working with community volunteers to restore Maui’s steep slopes to… Continue Reading →

Dirt road waiting to be restored in Maui, Hawaii

Talking Story About Maui’s Coral Reefs

Last month, we were honored to be selected by the National Fish and Wildlife Foundation (NFWF) as a recipient of the Coral Reef Conservation Fund grant, our second in as many years.  The grant supports our restoration projects in West Maui, Hawai‘i where we’re planting native plants along stream banks and degraded agricultural lands to… Continue Reading →

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