• Artificial Reef Consortium
• Blue Ventures - UK-based not-for-profit organisation dedicated to facilitating projects that enhance global coral reef conservation and research
• British Divers Marine Life Rescue
• Coral Cay Conservation
• Earthwatch
• Environment Agency
• Global Coral Reef Alliance
• Greenpeace
• MCS - Marine Conservation Society
• Oceanic Research
• Operation Wallacea
• Shark Trust
• Surfers Against Sewage
• Sussex SeaSearch
• WDCS - Whale and Dolphin Conservation Society

Misc

• Conservation of underwater artifacts