Sevengill Shark Sightings on the Rise in Southern California

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The majestic broadnose sevengill shark. Photo by Scott McGee - underpressurephoto.com

Active REEF surveyor, Mike Bear, and other San Diego area divers started noticing something unexpected earlier this year -- increasing numbers of encounters with the Bluntnose Sevengill Shark, Notorynchus cepedianus, also known as the Broadnose Sevengill shark. Knowing first hand the impact that divers and snorkelers can have as citizen scientists, Mike set up a website - http://sevengillsharksightings.org -- to serve as a central repository for photographic, videographic and written data on these magnificent creatures. Submissions on the site will allow REEF surveyors who are lucky enough to encounter this prehistoric species to provide additional information and images beyond the sighting and abundance information recorded as part of their REEF survey. It will also enable divers who were not doing a REEF survey to report their encounter. One of the most interesting parts of the website will be the development of an informal photographic database of Sevengill sightings that will facilitate the comparison of photographs and the potential identification of individual sharks using the unique pattern of dark "freckles" on the backs of each shark, similar to the patterns seen on whale sharks. To date, six REEF surveys in San Diego have reported a Sevengill (click here to see the sightings report).

Second Annual Bahamas Lionfish Derby Brings in 941 Lionfish

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Zane Carney, from Team Meander, captured the largest lionfish of the day - a whopping 43.4cm in length (approx. 19 in) and weighing about 4 pounds!
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Preparing the lionfish for the cookout.
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Derby First Place Team, White Roach.

The second annual Abaco Lionfish Derby, held at Green Turtle Cay, Bahamas, on Saturday June 19th, was a huge success. Teams on twenty-one boats from Florida and the Bahamas enjoyed perfect weather and conditions while collecting a grand total of 941 lionfish. Over $5,000 in cash was awarded to the winning teams for the most, biggest, and smallest lionfish. This event, held in the Bahamas and sanctioned by the Bahamas Department of Marine Resources, is one of many REEF efforts to cull invasive lionfish populations and raise awareness about the issue.

The award for most lionfish collected in the one-day event went to team White Roach from Abaco. Repeat winners, the trio of skilled lionfish collectors significantly exceeded their tally from 289 lionfish last year to a whopping 345 this year. This number is both astonishing and alarming when you consider how dense lionfish populations must be for three people to have the ability to collect over 300 lionfish in the span of a single day.

Team Meander from Jacksonville, FL, clenched 1st, 2nd, and 3rd place for largest lionfish collected. Zane Carney captured the largest lionfish ever recorded in the Abacos, which measured just 2cm short of the national record. Zane told Derby organizers that he found a hole outside the main barrier reef off of No Name Cay in 45 feet of water that was full of very large lionfish. He used a pole spear to bag the winning fish, which was 43.4 cm in length (roughly 19 inches long) and weighed approximately 4 pounds.

Lad Akins, REEF’s Director of Operations, and Stephanie Green, a collaborative research partner from Simon Fraser University, recorded valuable data during the event, including lionfish sizes, stomach contents, and sex for many of the lionfish before they were filleted and cooked by the Green Turtle Club. Observers and participants, many of whom had never tried lionfish, found the fish quite tasty, resembling hogfish or grouper. This year, Tropic Seafood Limited of Nassau also arranged to purchase some of the larger fillets of lionfish for distribution in local markets. According to Derby organizer, Bobbie Lindsay, “Tropic’s offer to purchase lionfish is an exciting development, because creating a market for lionfish is the best way to control the population of this invasive fish.”

Thanks to the Derby co-sponsors, Green Turtle Club, and Brendal’s Dive Center, who offered special discounts for Derby participants. REEF also extends sincere gratitude to all of the participants, and especially Bobbie Lindsay, an active REEF member and volunteer who took the lead in organizing the Derby making it a successful event again this year. Next year’s Derby is set for June 24-25, 2011. For full results and pictures go to www.lionfishderby.com.

Summary of Team Results -

  • Most Lionfish: 1st Place: White Roach 2nd Place: Goofin’ Off 3rd Place: Cajun Bahamas
  • Largest Lionfish: 1st, 2nd, and 3rd Place: Meander
  • Smallest Lionfish: 1st and 2nd Place: Goofin’ Off 3rd Place: All Play
  • Top of the Charts: Survey Stats

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    An arrow blenny is a great find during a Caribbean survey. Photo by Doug Champion.

    Current Most Active Surveyors

    Conducted the most surveys in the last three months:

    TWA – Peter Leahy (169), Michael Phelan (67), Dave Grenda (48)

    NE – Jason Feick (9), John Feehan (8), Michael MacDonald (7)

    PAC – Rhoda Green (36), Jan Kocian (34), Betty Bastai (31)

    TEP – Carol Cline (16), Daniel Richards (12), Gerald Winkel (3)

    HAW – Don Judy (41), Rick Long (34), Flo Bahr (23)

    To date, 140,234 surveys have been conducted by REEF volunteers.

    Visit www.REEF.org/db/stats to see the Top 10 surveyors with the most surveys conducted to date, the most species-rich locations, and most frequently sighted fish species.

    Putting It to Work: REEF Scientist Participates in Key Workshop

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    In addition to maintaining the REEF Survey database and providing data files to scientists, government agencies, and other groups, REEF staff participate in a variety of scientific conferences and workshops each year. Earlier this month, REEF's Director of Science, Dr. Christy Pattengill-Semmens, participated in "Engaging and Learning for Conservation". Christy and 49 others were invited to the workshop to discuss ways to enhance biodiversity conservation and environmental stewardship through public participation in scientific research (PPSR). PPSR encompasses citizen science and other programs where the public is involved in one or more phases of scientific research. With support from the National Science Foundation, the Cornell Laboratory of Ornithology, a leader in bird citizen science programs, initiated this effort to bring together conservation scientists and practitioners, resource managers, academics, educators, and community and project leaders. The overarching goal of the workshop was to discuss best practices to build the field of public participation in scientific research, and lay the groundwork for the workshop team to refine ideas into tools and resources. The two-day workshop was held at an epicenter of biodiversity and conservation research, the American Museum of Natural History in New York City. With almost 20 years of working with REEF, Christy had valuable perspectives on how a citizen science program can meaningfully contribute to conservation and stewardship.

    Give Thanks to Our Oceans by Donating to REEF

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    Members who donate $250 or more will receive this limited, signed, and numbered print of a beautiful Peppermint Basslet.

    I am excited to announce the launch of our Winter Fundraising Campaign. During this holiday season, please consider a contribution to protect and conserve our marine eco-systems. Donate today using our secure online form, call REEF HQ at 305-852-0030, or mail in your donation to REEF, PO Box 246, Key Largo, FL 33037. Members who donate $250 or more will receive a limited, signed, and numbered print of a beautiful Peppermint Basslet.

    This year, we give thanks to all our supporters and donors who have made REEF's programs in 2011 successful. Your donation supports a database of over 154,000 fish and invertebrate surveys, marine conservation research, Nassau Grouper and Goliath Grouper protections, lionfish invasion control, educational outreach, and a whole lot more.

    Please give thanks this month to our oceans! They cover 70 percent of this planet, are home to millions of magnificent species, and contain important resources that we all depend on. We appreciate your ongoing dedication to our marine conservation initiatives and wish you a happy holiday season.

    The Faces of REEF: 2011 Volunteer of the Year, Heather George

    REEF proudly names Heather George as our 2011 Volunteer of the Year. Since becoming a member nearly a decade ago, Heather has conducted 192 REEF surveys throughout the world and is a member of the Advanced Assessment Team in the Tropical Western Atlantic and Hawaii. In 2010, Heather joined the volunteer research team for the Grouper Moon Project. Through the years, she has conducted fish identification trainings for dive shops and aquaria and has led several REEF Field Survey Trips. Heather also served on the REEF Board of Trustees from 2007 to 2010 and brought a wealth of knowledge about fundraising and membership development to the organization. In 2011, Heather assisted with the expansion of the Volunteer Fish Survey Project to the South Pacific as part of the field team to American Samoa. When Heather is not underwater looking at fishes or teaching others about the joys of fish watching, she is helping other ocean-related organizations such as the Aquarium of the Pacific and the Waterkeeper Alliance. We are so grateful to have a wonderful volunteer who contributes to REEF in so many ways. Thank you, Heather!

    Outstanding in their Field: Featured REEF Field Station, Scuba Obsession

    REEF is proud to partner with over 270 dive shops, dive clubs, individuals, and other organizations as REEF Field Stations. For more information on how to find one near you, or to become a Field Station in your area, visit the Field Station Directory.

    This month we feature Scuba Obsession, Al Audet's independent instruction business located in Melbourne Florida. Al was introduced to the wonderful world of fish identification through a class through OceanWatch.org. He attended as many classes as he could, and through the help of outstanding instructors and guides, he was hooked. He decided to incorporate fish ID into his teaching repertoire, and signed up as a REEF Field Station in November 2009.

    Instructors have a lot of influence on their new open water students, and Al steers them toward fish ID all along the way. During the last Open Water dive, he normally takes his waterproof Fish-In-A-Pocket guide and points the fish they see on their dive out to the students. As his students move on to their Advanced Open Water courses (of which they can choose some that match their interests), he always encourages them to select Fish ID as one of their Adventure Dives. During the class, they learn about fish ID, do REEF survey dives together, and then are encouraged to join REEF and enter their data.

    Al feels that the east coast of Florida is a great place to engage divers in fish ID. "The east coast of Florida has some of the best diving in the world. You never know what you're going to see. We also have the most popular muck dive in the world - the Blue Heron Bridge. You'll find fish under the bridge that you won't see any place else in Florida."

    Al employs several different teaching techniques for his students. He offers Fish ID classes regularly and also attends REEF Fishinars, which he touted as one of REEF's best programs. He has also put together a video for his Fish ID students, online and available for viewing here: http://vimeo.com/11153948

    One of Al's most exciting moments during a dive was when he was teaching a Fish ID Adventure dive for an Advanced Open Water class off Jupiter, FL. The boat captain gave them a sand drop, so after a few minutes of looking for the reef, the dive guide decided to ascend. On the way up... they looked up, and realized they were ascending into a whale shark! One of Al's students described it best, "I looked up, and I thought I saw the boat. Then I saw the fins." Thanks Al and Scuba Obsession for serving as a REEF Field Station!

    REEF Staff Attend Regional Scientific Conference

    Grouper Moon Project collaborators - Scott Heppell (OSU), Bradley Johnson (CIDOE), Christy Pattengill-Semmens (REEF), Phil Bush (CIDOE), Brice Semmens (Scripps), l-r.
    Lad Akins, Adam Nardelli, and Stephanie Green at their research poster on demographics of lionfish derby participants.

    REEF Staff Dr. Christy Pattengill-Semmens (Director of Science) and Lad Akins (Director of Special Projects), joined over 300 scientists, resource managers, and fishers at the Gulf and Caribbean Fisheries Institute (GCFI) meeting last week in Corpus Christi, Texas. All three of REEF's major programs were represented.

    Christy presented a research poster on an analysis of patterns of rarity in fishes in the Caribbean basin using the REEF Volunteer Fish Survey Project database. Over 90,000 surveys from our citizen science program were used to explore where the rare things are, and why some places seem to have so many more of them than others.

    Lad co-chaired a session on Invasive Lionfish, featuring 21 talks on the current state of lionfish research and control efforts in the Atlantic. During this session, REEF Affiliate Scientist, Dr. Stephanie Green, presented her findings on the efficacy of lionfish derbies. Her research shows that one-day derby events like the ones REEF coordinates in Florida and the Bahamas can result in a significant reduction of lionfish densities, up to 70%, over 180 square km, all the result of volunteer teams. Lad and Nova Southeastern University graduate student and upcoming REEF Intern, Adam Nardelli, also presented a research poster on the demographics of participants in the 2013 Key Largo Lionfish Derby.

    And finally, REEF Grouper Moon Project collaborators, Dr. Brice Semmens (Scripps Institution of Oceanography) and Dr. Scott Heppell (Oregon State University) both presented talks during the fish spawning aggregation session, and we were also joined by collegues from the Cayman Islands Department of Environment (CIDOE). Brice presented findings from our research using Passive Acoustic Monitoring on a multi-species spawning aggregation on Little Cayman, and Scott presented a theory for why spawning aggregations have collapsed around the world and how our Grouper Moon research can be used to help inform future protection efforts.

    Putting It To Work: New Publication on Black Rockfish and Marine Reserves

    Black Rockfish. Photo by Dan Grolemund.

    A new scientific paper was recently published in the journal Evolutionary Applications that used REEF Volunteer Fish Survey Project. REEF data were used to validate population estimates of Black Rockfish throughout western Canada, Washington State, and Oregon. These results were then used to evaluate the efficacy of marine reserve networks in these areas. The authors of the study estimated the scale of dispersal from genetic data in the black rockfish, and compared this estimate with the distance between Rockfish Conservation Areas that aim to protect this species (essentially evaluating whether the reserves are "connected" enough). Their findings showed that within each country, the distance between conservation areas was generally well connected. The distance between the networks in the two countries, however, was greater than the average dispersal per rockfish generation.

    You can read the paper online here. Visit our Publications page to see all of the scientific papers that have been published using REEF data and projects. The paper's citation is: KE Lotterhos, SJ Dick and DR Haggarty. 2014. Evaluation of rockfish conservation area networks in the United States and Canada relative to the dispersal distance for black rockfish (Sebastes melanops). Evolutionary Applications. (2014) 238–259.

    Beat the Winter Blues - Plan your 2015 REEF Field Survey Trip now!

    While we can't do much about dreary winter weather, booking a trip for the coming year might be just the trick to lift your mood. REEF trips are a diver's dream vacation! Destinations include Fiji, Hawaii, the Bahamas, Roatan, Cozumel and more. Expert-led fish identification education combined with citizen science and world-class diving make our trips unique. Visit www.REEF.org/trips to find out more, and then contact us at trips@REEF.org or 305-588-5869 to book your space.

    And if that's not enough, we'll throw in a super warm REEF beanie (made by Fourth Element), hot cocoa, and some hand warmers if you book by December 31st. At least that way you'll stay warm while waiting for your trip date to roll around. Be sure to enter the code: WARMWINTER in the comments section when booking your trip.

    2015 REEF Field Survey Schedule

    Feb 28 - Mar 7 -- Hawaii -- Kona Aggressor II Liveaboard, Led by Dr. Christy Pattengill-Semmens, 4 spaces left, Details

    Mar 14 - 21 -- Grand Cayman -- Wall to Wall Diving and Comfort Suites, Led by Jonathan Lavan, 4 spaces left, Details

    May 2 - 12 -- Fiji -- NAI'A Livaboard, Led by Dr. Chrisy Pattengill-Semmens and Dr. Brice Semmens, 5 spaces left, Details

    May 12 - 19 -- Fiji -- NAI'A Livaboard, Led by Dr. Chrisy Pattengill-Semmens and Dr. Brice Semmens, 1 space left, Details

    May 9 - 16 -- Bahamas Invasive Lionfish Control Study -- Explorer II Liveaboard, Led by Lad Akins and Peter Hughes, 1 space left, Details

    Jun 13 - 20 -- Roatan -- Anthony's Key Resort, Led by Ned and Anna DeLoach, Details

    Jul 11 - 18 -- Grand Turk -- Oasis Divers & Osprey Beach Hotel, Led by Paul Humann, Sold Out!, Details

    Aug 1 - 8 -- Bonaire -- Buddy Dive, Led by Dr. Christy Pattengill-Semmens and Dr. Brice Semmens, 1 space left, Details

    Aug 22 - 29 -- Curacao Invasive Lionfish Control Study -- GO WEST Diving & Kura Hulanda Lodge, Led by Lad Akins and Peter Hughes, Details

    Nov 1 - 5 -- Catalina Island -- Scuba Luv & Pavilion Hotel, Led by Janna Nichols, Details

    Dec 5 - 12 -- Cozumel -- Chili Charters & Safari Inn or Casa Mexicana, Led by Tracey Griffin, Sold Out!, Details

    Design by Joanne Kidd, development by Ben Weintraub