Stony Coral Tissue Loss Disease

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How To Report SCTLD

If SCTLD is suspected in your location, it is imperative to report the disease and share pictures of diseased colonies to confirm it is SCTLD. The opens in a new windowAtlantic and Gulf Rapid Reef Assessment (AGRRA) Database database is collecting reports of disease across the Caribbean, including pictures and other information, that are easily viewable on their website.


Stony Coral Tissue Loss Disease, or SCTLD, is a disease affecting over 20 species of hard corals in the Caribbean. It is currently causing significant damage to coral reefs in Florida and beginning to be reported in other Caribbean islands. While diseases are not uncommon on coral reefs, SCTLD poses a particularly significant threat to Caribbean reefs because of its large geographic range, extended duration, high rates of mortality, and large number of coral species affected.

SCTLD is suspected to be caused by bacterial pathogens and can be transmitted to other corals through direct contact and water circulation. Many current efforts are under way to identify disease agents, relationships with environmental factors, strategies to treat diseased colonies, and identify genotypes of corals that are resistant. In conjunction with these activities, many resources are being developed to assist managers and other stakeholders with identifying and responding to the disease.

The resources provided here will be continually updated and are the result of collaborations amongst many partners working to combat SCTLD. Click to learn more about the opens in a new windowagencies and organizations involved in this effort.

General Information

The resources below provide a broad range of information on the disease, with many providing up-to-date descriptions of current knowledge and research.

SCTLD Interventions

SCTLD Website Portals

The following websites have been developed by partners and offer a variety of information and resources on the disease.

Identifying the Disease

This coral disease is generally characterized by several lesions of dead coral tissue that occur across a coral colony and spread rapidly to cause whole colony mortality. Below are resources to help correctly identify SCTLD compared with other causes of coral mortality.

Monitoring the Disease

If SCTLD is suspected in your location, it is imperative to report the disease and share pictures of diseased coral colonies to confirm the disease. The AGGRA database is currently collecting information on disease reports and can help confirm SCTLD as the cause of mortality. The other resources listed can be used for monitoring the disease.

Rapid Response

Because SCTLD is a disease that spreads quickly, it is critical to have a plan already in place for how you will respond to the disease if sighted in your location. Management agencies in Florida have prepared several resources below describing their SCTLD response plan and structure.

Community Engagement

Community members that are actively engaging with coral reef resources should be informed of SCTLD in areas where spread may be likely and once the disease has been confirmed. The following resources are available as examples of how to inform community members about the disease and engage them in response efforts.



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