The Grouper Moon Project - Protecting An Endangered Icon

Over 4,000 Nassau Grouper amass at a spawning aggregation during winter full moons off Little Cayman Island. Photo by Paul Humann.
A lone Nassau Grouper at the Little Cayman aggregation. Photo by Joshua Stuart.
REEF's Grouper Education Program works with Caymanian students to educate and inspire.

REEF scientists and volunteers are heading down to the Cayman Islands next week for another season of the Grouper Moon Project (www.REEF.org/groupermoonproject), a collaborative research effort with the Cayman Islands Department of the Environment (CIDOE). In its 16th year, this important project focuses on one of the largest (and one of just a few) known spawning aggregations of Nassau Grouper, an endangered Caribbean reef fish. Over 4,000 grouper will amass in one location for 7-10 days following the full moon.

Since 2002, REEF and our partners at CIDOE, Scripps Institution of Oceanography, and Oregon State University have used a variety of research techniques from diver surveys to state-of-the-art technology to study this amazing natural phenomenon. The research has yielded ground-breaking results that have led to improved conservation for Nassau Grouper in the Cayman Islands. On August 15, 2016, the Cayman Islands government enacted a comprehensive set of regulations aimed at recovering Nassau Grouper. The new rules are based on the more than a decade of collaborative fisheries research carried out by the Grouper Moon Project (click here for more information about the legislation).

In addition to the research, in 2011, with funding from Disney Conservation Fund, REEF launched an education program to engage students in the Grouper Moon Project. This exciting project brings the Nassau Grouper into elementary and high school classrooms through lesson plans and live-feed videos that connect classrooms with scientists in the field. Three live-feed webcasts are planned for our 2017 work. Anyone can watch the feeds live or archived. The live-feed schedule is:

  • Wednesday February 15th and Friday February 17 (11:45am - 12:30pm EST), from the Grouper Moon base of operations on Little Cayman, featuring scientists explaining the research objectives, day-to-day activities, and research equipment used during the project.
  • Thursday February 16 (1:00pm - 1:45pm EST), from underwater on Cayman’s famous Bloody Bay Wall.

The live feeds stream through the REEF Grouper Moon Project YouTube channel.

Do you want to learn more about the Grouper Moon Project? Watch this short PBS documentary about our efforts. And if you would like to support this important marine conservation program, please donate to REEF - https://www.reef.org/contribute.

Design by Joanne Kidd, development by Ben Weintraub