- Center for Ecosystem Survival (CES)
 - Committed to the advancement of worldwide conservation through the preservation of threatened rain forest and coral reef habitats around the world.  Coral Cay Conservation
- Join expeditions to the Caribbean and Asia-Pacific to help protect threatened coral reefs and tropical forests, create reserves and wildlife sanctuaries, and establish conservation education and training centres for local people.- Coral Reef Alliance (CORAL)
- Independent, nonprofit membership organisation that works to address the worldwide problem of coral reef destruction.
- Global Coral Reef Alliance (GCRA)
- Coalition of volunteer scientists, divers, environmentalists, and other individuals and organisations committed to coral reef preservation.
- Global Coral Reef Monitoring Network (GCRMN)
- Working to raise awareness on reef status and provide data to assist resource managers in coral reef conservation.
- Great Barrier Reef Research Foundation
- Raises and manages money to support scientific work on the Great Barrier Reef.
- International Coral Reef Action Network (ICRAN)
- Collective coral reef conservation and research programme that combines scientific, cultural, and economic perspectives.
- International Coral Reef Initiative (ICRI) (3)
- International Society for Reef Studies (ISRS)
- Promotes the production and dissemination of scientific knowledge and understanding of coral reefs, both living and fossil.
- Jacksonville Reef Research Team
- Nonprofit volunteer organisation using research diving to deploy, monitor, and enhance artificial reefs.
- Netherlands Antilles Coral Reef Initiative
- Working to preserve coral reefs throughout the islands.
- NOAA Coral Reef Conservation Program (CRCP)@
- Ocean Watch Foundation
- Working to conserve oceans, marine life, and coral reefs through education and grassroots action.
- Planetary Coral Reef Foundation (PCRF)
- Organisation which aims to preserve and protect earth's coral reefs through programmes in science, research, and education. Site provides information on coral reefs in crisis, research and education programmes, and reef preservation programmes.
- Project AWARE Foundation
- Leads programmes and initiatives within the diving community to preserv the aquatic environment and its resources.
- Reef Check
- Dedicated to global coral reef education, monitoring, and management.
- Reef Environmental Education Foundation (REEF)
- Protecting marine life through education, research and involvement.
- Reef Futures
- Ensuring technology and knowledge are used to ensure the benefits available from the Great Barrier Reef are maintained.
- Reef Relief
- Private nonprofit membership organisation dedicated to preserving and protecting North America's only living coral barrier reef.
- ReefGuardian International
- Fighting to end and prevent wire-mesh fish trap abuse, reef burials, fish depletion, and ship groundings in coral reefs.
- Rescue the Reef
- Nature Conservancy programme conducting ecological surveys and establishing marine parks to protect coral reefs.
- United States Coral Reef Task Force
- Monitors the progress of the interagency U.S. Coral Reef Task Force.
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