What they do
Reef Check is the world's largest volunteer coral reef monitoring network. They train recreational divers and snorkelers to conduct standardized reef health surveys using a protocol designed to be both scientifically rigorous and accessible to non-scientists. Since 1997, Reef Check has conducted over 14,000 surveys at 4,000+ reef sites in 90+ countries. Their data feeds into global reef health assessments and marine protected area management plans.
Why they matter
Professional reef monitoring cannot cover the world's coral reefs. Reef Check's volunteer network fills this gap with remarkable consistency: their standardized protocol has been validated against professional survey methods and produces data reliable enough for peer-reviewed research. More importantly, volunteers who conduct surveys become lifelong reef advocates. The program creates citizen scientists who understand reef health firsthand.
How to support
Take a Reef Check EcoDiver training course to become a certified volunteer surveyor. Participate in surveys during dive trips to contribute data. Donate to support training programs and data management infrastructure. Dive operators can partner with Reef Check to offer survey trips.
Key project to explore
The California Kelp Monitoring program, where Reef Check volunteers conduct quarterly surveys of kelp forest health along 800+ kilometers of coastline. This volunteer-collected data is the primary dataset used by California Fish and Wildlife for kelp management decisions.