REEF Survey Super Stars -- the Golden Hamlet Club Welcomes Two New Members

The elusive golden hamlet is the namesake of the club reserved for REEF volunteers who have conducted over 1,000 surveys. Photo by Ned DeLoach.
Bruce Purdy has been an active supporter of REEF's lionfish research in the Bahamas.
Dave Grenda conducting a transect survey during a REEF Wellwood monitoring project.

While every one of REEF’s 10,000+ volunteers who have conducted a survey as part of the Volunteer Survey Project are Making Dives That Count, there is a small cadre of surveyors who have taken their passion for fish and critter watching to the next level. They are the volunteers, those most active in each of REEF’s project regions, who have actively strived to move through the REEF Experience Level system, often becoming REEF Experts and members of the Advanced Assessment Team (AAT). And among this group, there are a handful of surveyors who have reached a significant benchmark – the 1,000 survey mark! Passing this benchmark gets you a place in the REEF Golden Hamlet Club. And this Summer, REEF welcomes two new GHC members - Bruce Purdy and Dave Grenda. They join Peter Leahy, Linda Baker, Lad Akins, Judie Clee, Linda Ridley, and Linda Schillinger.

Bruce Purdy is the owner/operator of the Bahamas diving liveaboards Aquacat, Cat Ppalu and Blackbeard's Cruises. He's been a REEF member since 1994 and a member of REEF's Tropical Western Atlantic AAT since 2002. Bruce is a staunch conservationist and has been integral in supporting REEF's lionfish work in the Bahamas. In addition to his work with REEF assessments and lionfish projects, he has also pioneered sea urchin restoration efforts in the Bahamas. Even though he has reached the milestone of 1,000 surveys, Bruce continues to encourage his diver to join him in surveying Bahamian reefs and supporting REEF's conservation projects - Way to go Bruce!!!

Dave Grenda has been a REEF member since 1998, and is one of the very few of our volunteers who have conducted REEF surveys in all four regions -- Tropical Western Atlantic, Tropical Eastern Pacific, West Cost of the US, and Hawaii! He joined the Tropical Western Atlantic AAT in 2001 and has participated in multiple AAT special projects. Dave is also a NOAA Science Diver and has participated in multiple NOAA research cruises in National Marine Sanctuaries. Most recently, Dave started helping with the REEF Grouper Moon Project and just returned from a few weeks on Grand Cayman helping to tag Nassau grouper. His passion for fishwatching shines through on projects and he is always eager to share the joy of a new find. In his "other" life, Dave is a retired Air Force Colonel. Way to go Dave!!!

Hoyt S Vandenberg -- Plans for Sinking in Early May, REEF To Monitor Fish Recruitment

The Vandenberg at dock in the early 1980's. Photo courtesy of the Artificial Reefs of the Keys.

After many years of planning, financial woes and last minute negotiations, it appears that the Hoyt S Vandenberg, a 520-foot troop transport/missile tracking military vessel, will be sunk as the newest artificial reef in the Florida Keys. Recent communication with the State of Florida’s Fish and Wildlife Commission has given the go ahead for REEF to initiate pre-deployment monitoring of the sinking site and 7 other adjacent reef areas to study the recruitment and movement of fish around the wreck and reef sites. 

The one year study will also include surveys of non-native orange cup coral, titan acorn barnacle and Indo-Pacific lionfish. While exact dates have not been set for the sinking, plans are for the ship, located now in Virginia to be towed to Key West in early April and then scuttled 6 miles offshore in May. REEF Advanced Assessment Teams will survey the sites prior to deployment, then again one month following the sinking and quarterly through the remainder of year one. It is anticipated that the wreck will provide significant habitat for fish as well as additional recreational opportunities for fishing and diving activities. Data gathered during REEF’s efforts will aid in determining how effective the ship is in meeting its biological objectives.

For more information on the Vandenberg fish survey project, contact Lad Akins, (305) 852-0030.

Blue Croaker -- What a Find

The mystery solved -- a Blue Croaker. Photo by Paul Humann.

One of the best parts about fishwatching is that no matter how many surveys you have under your belt, there's always a chance to see something unexpected. Recently I was diving on Davey Crocker Reef near Tavernier in the Florida Keys with four REEF surveyors. As often happens, we got separated, me with my photography and the others surveying. I spotted a brown fish about 8 inches long “drifting” in the water just under a ledge overhang. It sort of looked like a croaker to me, but not one that I recognized. I photographed it from a distance and continued to photograph while moving closer. The fish remained still, just looking at me. Finally, when I got about 6 feet away it retreated into the gloom under the ledge.

Back on the boat we were talking fish -- as usual. One of the others commented about a strange brown fish she had seen under a ledge. It turns out everyone had seen it and no one knew what it was. The entire group were members of REEF's Advanced Assessment Team (AAT, Expert Surveyors), so no one knowing is surprising. After downloading my photos, I researched the mystery fish. My hunch was correct; it was a Croaker, a rarely seen Blue Croaker, Bairdiella batabana. These were the first sightings of this species to go into the REEF database!

So how do you know if it's a Blue Croaker? The body coloration can be copperish to bluish brown. The only distinctive marking is a white crease on the gill cover.

California and Pacific Northwest ID Courses Available on CD-ROM

A REEF volunteers conducting a survey in Monterey Bay. Photo by Pete Naylor.

REEF is proud to release the latest version in our series of instructional marine life identification courses – Fishwatching in California. The California curriculum consists of three courses on one CD – divided into Southern California, Channel Islands, and Central/Northern California. Pictures and text are included and are geared for anyone interested in teaching Fish ID – ideal for dive shops and instructors, dive clubs, marine science centers and aquariums, and other groups. This course completes the library of West Coast curricula: California Fish ID, California Invertebrates and Algae, Pacific Northwest Fish, and Pacific Northwest Invertebrates. We would like to thank all of the photographers who generously donated underwater images for these courses!

These instructor-led courses are a great way to introduce divers and snorkelers to the variety of marine life that can be seen during their time in the water. Each module contains a CD-ROM with images with an easy-to-use teaching curriculum to train students in identification and REEF survey methodology. A sample starter kit is also included. Courses can be taught in approximately 2-3 hours and cover 50-70 of the most common species for an area.

The California Fish ID curriculum, along with all of the other curricula modules, are available online in REEF's store here --

REEF Data Featured in New Scientific Publication on Shark Population Status

Blacktip sharks are one of the 14 species that were analyzed in the recently published paper. Photo (c) Paul Humann.
REEF data are well suited for rarely seen species like sharks because of the wide geographic coverage by REEF volunteers. Photo by Ned DeLaoch.

REEF Fish Survey Project data were recently featured in a paper in the scientific journal PLoS ONE, Large-Scale Absence of Sharks on Reefs in the Greater-Caribbean: A Footprint of Human Pressures. The study's authors evaluated the status of 14 species of sharks in the Caribbean. In recent decades, large pelagic and coastal shark populations have declined dramatically with increased fishing. However, the status of sharks in other systems such as coral reefs remains largely unassessed despite a long history of exploitation. The paper's authors used REEF data to explore the contemporary distribution and sighting frequency of sharks on reefs in the greater-Caribbean, and assessed the possible role of human pressures on observed patterns.

The analysis was based on 76,340 underwater surveys carried out by REEF volunteers between 1993 and 2008. REEF data are well suited for rarely seen species like sharks because of the wide geographic coverage by REEF volunteers.The authors compared sighting frequency to the number of people in each area surveyed, and used population viability analyses to assess the effects of exploitation on population trends. Sharks, with the exception of nurse sharks, occurred mainly in areas with very low human population or strong fishing regulations and marine conservation. Population viability analysis suggests that exploitation alone could explain the large-scale absence; however, this pattern is likely to be exacerbated by additional anthropogenic stressors, such as pollution and habitat degradation, that also correlate with human population. Preventing further loss of sharks requires urgent management measures to curb fishing mortality and to mitigate other anthropogenic stressors to protect sites where sharks still exist. The fact that sharks still occur in some densely populated areas where strong fishing regulations are in place indicates the possibility of success and encourages the implementation of conservation measures.

A PDF of the full paper can be downloaded here. The citation is Ward-Paige CA, Mora C, Lotze HK, Pattengill-Semmens C, McClenachan L, et al. (2010) Large-Scale Absence of Sharks on Reefs in the Greater-Caribbean: A Footprint of Human Pressures. PLoS ONE 5(8): e11968. doi:10.1371/journal.pone.0011968. To see a complete list of papers and other publications featuring REEF data, visit the REEF Publications page.

REEF Fish Survey Project in Hawaii Turns 10, and Reaches 10,000 Survey Milestone!

Flo Bahr conducted the 10,000 REEF survey in Hawaii on January 29, 2011.

Almost 10 years to the day of launching the Fish Survey Project in Hawaii, the 10,000th REEF survey was conducted at Palauea Beach on Maui this past weekend! The landmark survey was conducted by long-time REEF member, Flo Bahr, who was diving the site with a group of active Hawaii REEFers. Flo was recently featured in our Member Spotlight (read her profile here). A huge thanks to Flo and all of the surveyors who have been busy in Hawaii. REEF launched our citizen science program in Hawaii on February 3, 2001, during a week-long celebration with partners from Project S.E.A.-Link, the Hawaiian Islands Humpback Whale National Marine Sanctuary, the Hawaii Department of Land and Natural Resources, and the Maui Community College Marine Option Program. Since then, many other partners have joined forces with REEF as Field Stations. We are looking forward to the next ten years! In honor of our anniversary, we have highlighted a local Field Station and one of our many local surveyors in this month's Making It Count. To celebrate our 10 years in Hawaii, we have scheduled a Field Survey Trip to Maui in April, we hope you will join us! Click here for more information.

Visit REEF's Top 10 Stats webpage to see the number of surveys and other top stats for all of REEF's regions -

Putting It to Work: Who’s Using REEF Data, July 2011


Every month, scientists, government agencies, and other groups request raw data from REEF’s Fish Survey Project database. Here is a sampling of who has asked for REEF data recently and what they are using it for:

- NOAA scientists from the Protected Resources Division are using data on three species of endangered rockfish to evaluate their status in the Salish Sea.

-University of Washington scientists are using REEF data on invasive tunicates to map distribution of the species throughout the Pacific Northwest.

Meet the New REEF Marine Conservation Interns


We are pleased to introduce our latest Marine Conservation Interns - Lucy Davis and Brandon Lenderink. Lucy was born and raised in Texas and has spent the past few years traveling around the world. In 2009, she lived in New Zealand assisting with various research projects using her underwater skills as a diver and driving boats. She recently went backpacking through Southeast Asia where she was able to dive and see the Lionfish in its native habitat. Although she began her college degree in elementary education, Lucy now is focusing more on environmental education. Brandon is a Colorado native and a recent biology graduate whose passion for wildlife and conservation has led him to pursue a career in marine biology. Brandon has worked as an aquarist for the Denver Downtown Aquarium, promoting conservation and working the animals such as endangered turtles and Sumatran tigers, as well as for Colorado Parks and Wildlife in the Aquatic Nuisance Species program. Brandon’s future goals are to become a research diver and scuba instructor.

The REEF internship program provides college age juniors, seniors, and graduate students the opportunity to experience working at a nonprofit environmental organization. Interns assist REEF staff with education, outreach, lionfish research, and day-to-day office assistance. Many REEF interns move on to successful careers in conservation and the marine environment, including natural resource agencies, academics, and conservation non-profits (including REEF). If you or someone you know is interested in applying to be a future REEF Intern, visit the application page --

Another GREAT Annual Fish Count

The 21st annual Great Annual Fish Count (GAFC) took place in July, with many dive shops, dive clubs, and other groups organizing fish ID classes, dive /snorkel days, BBQs and more fun gatherings. The concept behind the GAFC is not only to accumulate large numbers of surveys during the month of July, but to introduce divers/snorkelers to fishwatching and get them started doing REEF surveys. Groups from California, Oregon, Washington, British Columbia, Hawaii, Massachusetts, Maine, Hawaii, Florida, North Carolina, and new to the event in 2012 - New Brunswick, all participated! Once again, this year's largest one day event was held in the Northeast, coordinated by the New England Dive Club. Thank you to ALL participants, and we hope you'll continue conducting REEF surveys on your dives year round!

Putting It To Work: New Publication Showing Validity of REEF Survey Data

A REEF "Roving Diver" has free swimming range around a dive site. Surveyors are encouraged to search high and low for as many species as they can positively ID. Photo by Paul Humann.
Transect surveyors follow a path for a pre-determined length (typically around 25m) and record all species within a 1-3 meter swath. Photo courtesy of Ken Marks.

A new scientific paper published earlier this month in the journal Methods in Ecology and Evolution reports that REEF surveys conducted by citizen scientists compare well with traditional scientific methods when it comes to monitoring species biodiversity. The findings of the research, conducted by Dr. Ben Holt from University of East Angila in the UK, give weight to the growing phenomenon of citizen science programs such as REEF's Volunteer Survey Project. The field study compared methods used by REEF volunteer divers with those used by professional scientists to measure the variety of fish species in three Caribbean sites in the Turks and Caicos. The divers surveyed the sites using two methods – the 'belt transect', used in peer reviewed fish diversity studies, and the 'roving diver technique', used by REEF volunteers. Two teams of 12 divers made 144 separate underwater surveys across the sites over four weeks. While the traditional scientific survey revealed sightings of 106 different types of fish, the volunteer technique detected greater marine diversity with a total of 137 in the same waters. Dr Holt led the research in partnership with the Centre for Marine Resource Studies in the Caribbean and the University of Copenhagen, Denmark. He said: "The results of this study are important for the future of citizen science and the use of data collected by these programs. Very few, if any, scientific groups can collect data on the scale that volunteer groups can, so our proof that both methods return consistent results is very encouraging for citizen science in general. We're living in a world that's changing very significantly. Environmental changes are having a big impact on ecosystems around us so we need to harness new ways of measuring the effect. Our study demonstrates the quality of data collected using a volunteer method can match, and in some respects exceed, protocols used by professional scientists." Click here to read the full paper, entitled "Comparing Diversity Data Collected Using a Protocol Designed for Volunteers with Results from a Professional Alternative".

Design by Joanne Kidd, development by Ben Weintraub