The leatherback sea turtle is the largest of the five species that have been found in the northern Gulf of Mexico. With a carapace (top shell) length between 6-7 feet and weighing between 800-1000 pounds it is truly a magnificent creature. Any encounter with them is amazing.
Most encounters occur with fishermen or divers who are out searching for artificial reefs to fish or dive. Though very rare, they have been known to nest in this area. They feed exclusively on jellyfish and will follow them close to shore if need be. But what do leatherbacks do with most of their time? Do they hang offshore and follow jellyfish in? Do they circle the entire Gulf of Mexico and we see them as they pass? Based on past studies, many encounters with this turtle occur in the warmer months. They often become entangled in commercial fishing longlines set in the central Gulf of Mexico. But what do they do during the fall and winter? One of the tagging projects presented at a recent workshop tried to answer that question.
The project was led by Dr. Christopher Sasso of the National Oceanic and Atmospheric Administration. The tag chosen for this was a satellite tag. Since the leatherback must surface to breath air, and often is found near the surface following jellyfish, orbiting satellites would be able to follow them. As we mentioned in Part 1, catching the creature is step 1, and catching a six-foot 1000-pound sea turtle is no easy task.
The team used a spotter aircraft to locate the turtles. Once found, the pilot would radio the chase boat who would zip in with a large net. The net was connected to a large metal hoop and was designed to give way once it was around the turtle. Once in the net the turtle was hauled onto a small inflatable boat where the work of tagging could be done. They would measure the animal, take blood samples, place a PIT tag within them (similar to a microchip in your pet) and then attach the satellite tag by a tether to the tail end of the turtle before releasing it. The entire operation took less than 30 minutes.
Between 2015-2019 19 leatherbacks were tagged in the northern Gulf. 17 of these were females and 2 were males. Data obtained from these tags ranged between 63 and 247 days at liberty. The behavior the team noticed was divided into foraging behavior (feeding on jellyfish) and transiting behavior (direct swimming ignoring all).
The turtles foraged in this part of the Gulf until the fall season. At that point most of them moved south along the Florida shelf, past the western peninsula of the state, heading towards the Keys. A few chose to swim directly south against the Loop Current, and a small number remained in the area.
Those moving along the Florida shelf appeared to be foraging as they went. Those crossing the open Gulf may have foraged some but seemed to be focused on getting south to the nesting beaches. Almost all of the turtles entered the Caribbean on the east side of the Yucatan channel, following the currents, with their final destination being their nesting beaches. When they returned, they did so in the warmer months and used the western side of the channel – again following the currents – until they once again reached the northern Gulf and foraging began again. One interesting note from this study, the two males tagged did not leave the Gulf.
The tagging studies do show that leatherbacks use the Gulf of Mexico year-round. They usually head south to the Caribbean when it gets colder and use the currents to do so. It is during the warmer months we are most likely to see them here foraging on jellyfish. It is an amazing experience to encounter one of these large turtles. I hope you get to experience it one day.
Satellite tracks of leatherback movement in the GoM. Red (2015), Blue (2018), Black (2019).
Image: Sasso (et.al.) 2021.
Reference
Sasso, C.R., Richards, P.M., Benson, S.R., Judge, M., Putman, N.F., Snodgrass, D., Stacy, B.A. 2021. Leatherback Sea Turtles in the Eastern Gulf of Mexico: Foraging and Migration Behavior During the Autumn and Winter. Frontiers in Marine Science., Vol. 8., https://doi.org/10.3389/fmars.2021.660798.
Pompano?! More like Pompa-YES! Growing up in the Panhandle of Florida, I was exposed to many great fishing seasons and opportunities, from the Cobia (Rachycentron canadum) run in the spring to the “Bull” Red Drum (Sciaenops occelatus) run of the fall, but my absolute favorite season was the Florida Pompano (Trachinotus carolinus) run on the beaches. While I enjoyed being on the boat scouring the beaches with a small bucktail jig, casting at sliver flashes in the cuts of the sandbar, I had my most memorable trips on the beach with a few rods, sand spikes, and a “flea rake.” There were no bad days on the beach (as they say, it’s better than a day in the office), and when you happen upon a honey hole, it makes for an incredible day with very little effort and usually an incredible dinner to follow. Since we are rapidly approaching peak pompano season, I will pay homage to the “Silver Surfers of the Emerald Coast” with a little overview of the life of a Florida Pompano.
Beach Fishing for Florida Pompano is for Everyone, Young and Old – Thomas Derbes II
Florida Pompano have a very wide range, from Massachusetts to Brazil, and are a member of the family Carangidae (aka the Jack Family). It is a very popular sport and commercial fishery, and its rapid growth rate makes it a prime candidate for aquaculture. Florida Pompano are highly migratory fish, and they can run from the Florida Keys all the way to Texas and back in a season. In the Florida Panhandle, the Florida Pompano run starts in April/May lasting until July, with a bonus fall run in October/November when they are returning south. When fishing off the sandy beaches of the Florida Panhandle, you can run into its cousins the Permit (Trachinotus falcatus) and Palometa (Trachinotus goodei) who often get mistaken for a Florida Pompano. Another thing they have in common with Florida Pompano is their love of crustaceans including the Mole Crab (aka Sand Fleas) (Emerita portoricensis) and Atlantic White Shrimp (Litopenaeus setiferus).
Just like most members of the family Carangidae, Florida Pompano are considered “batch spawners.” A batch spawner is when a female releases her eggs into the water column and a male simultaneously releases his sperm into the water column. Female Florida Pompano can release upwards of 800,000 eggs per spawning season, and Florida Pompano typically head offshore in early spring to October in the Gulf of Mexico to spawn, and their juveniles return to the beach to grow along the shoreline. Florida Pompano can reach an aquaculture harvest size of 12 inches within one year, and males reach maturity in 1 year whereas females mature after 2 to 3 years.
Florida Pompano Eggs 12 Hours Post Fertilization – Thomas Derbes II
When it comes to table fare, Florida Pompano ranks very high on my personal fish list, and many chefs love serving pompano at their restaurants due to the great, mild taste and fillets that are of even thickness. Their diet of crustaceans helps yield a buttery, almost crab flavor and the meat is very flaky and white. There are many preparation techniques for Florida Pompano, from grilled whole to pan-fried, and pompano have even inspired their own cooking technique, “Pompano en Papillote,” or baking pompano in parchment paper.
Beautiful Florida Pompano Caught Off Pensacola Beach, Florida – Thomas Derbes II
When fishing for Florida Pompano off the beach, most anglers employ a large rod (usually a 10ft rod) with a 20lb fluorocarbon double drop loop rig and pyramid weight. The larger rod allows for maximum casting distance from the beach, giving beach anglers a chance to reach behind the first sandbar. Most anglers will bring either fresh dead shrimp or a flea rake with them to catch the prized bait, mole crabs. Pro tip, when casting out the rods, make sure you have a bait close to the shore in the “trough” and not just past the sandbar. (Learn More About Rigging Here!) If you plan to harvest a Florida Pompano, make sure you check your local regulations. In the Florida Panhandle, Florida Pompano must be 11 inches (fork-length) or larger with a daily limit of 6 per angler.
My nephew showing off his prized Florida Pompano – Zach Saway
I hope you have enjoyed this profile for the Florida Pompano. Now is the time to get your rods out of storage and ready to hit the beach!
The Gulf of Mexico Sea Grant Science Outreach Team is proud to announce four new outreach items that are applicable throughout the US and showcases marine microplastics and homeowners’ insurance:
Marine Microplastics Primer for Extension Professionals – This publication is intended to serve as a guide for extension professionals to aid in answering questions about microplastics that they have encountered or may encounter in the future. The publication can be accessed at https://gulfseagrant.org/wp-content/uploads/2023/08/MASGP-23-051.pdf.
Property Insurance Basics – Confused about homeowners’ insurance and what it covers or know people who are? The outreach team has created a publication to share basic information about insurance to help property owners make informed decisions about the amounts and types of protection for their homes. Access to the publication can be found https://gulfseagrant.org/wp-content/uploads/2023/08/MASGP-23-015.pdf.
What is Risk Rating 2.0 and how will it affect my flood insurance?–FEMA has updated their risk rating approach through a new pricing method. This change is the biggest change to the way flood insurance premiums are calculated since 1968. Want to learn more about this new system and how it will affect your flood insurance? Click https://gulfseagrant.org/wp-content/uploads/2023/08/What-is-Risk-Rating-2.0.pdf to access our publication.
There is a term that all oyster farmers dislike, it is almost like that one villain from a famous book/movie series where they shouldn’t say his name. That term is “unexplained spring/summer mortality” and it has been a growing issue along with the expansion of oyster farming throughout the southeast. While the art of oyster farming has been around since the time of the Romans, it is a relatively new venture here in the Gulf of Mexico, and Florida is home to over one hundred oyster farms. These farms are meticulously cared for by the oyster farm crew, with many different anti-fouling techniques and biosecurity measures in practice to provide the customer with a safe, clean product that you can consume even in the months without an R (another article on that coming later). Each year, farm managers can expect a 10-30% mortality event during the transition from winter into spring/summer, hence the term “unexplained spring/summer mortality.” Researchers and scientists from all over the southeast have been actively working to find a cause for this phenomenon, but the answer has been hard to find.
Dead, market ready oysters from one bag. Cause of death, “Unexplained Mortality Event 2022” Photo by: Thomas Derbes II
Our Pensacola Bay has been a hotbed for oysters lately; The Nature Conservancy recently constructed 33 oyster beds along Escribano Point in East Bay, the establishment of the Pensacola & Perdido Bay Estuary Program, acquisition of a $23 million restoration grant with $ 10 million towards 1,482 acres of oyster restoration, and the establishment of oyster farms and hatcheries. In Pensacola Bay, there are currently 5 oyster farms in operation, one of those farms being a family-owned and operated Grayson Bay Oyster Company. Brandon Smith has been managing the business and farm for over 4 years now and has experienced mortality events during those prime spring/summer months. In recent years, they have experienced mortality events ranging from minimal to what many would consider “catastrophic,” and reports from around Florida and the Southeast convey a similar message. Concerned for not only the future of his family farm, but other oyster farms in the Southeast, he has been working with the most experienced institutions and groups in 2022 to possibly get an answer on his and other local “unexplained mortality events.” Each road led to the same answer of “we aren’t quite sure,” but this didn’t deter Smith or other the farmers who are dealing with similar issues.
In 2023, Smith was invited to participate in a Florida-Wide program to track water quality on their farm. This project, led by Florida Sea Grant’s Leslie Sturmer from the Nature Coast Biological Station in Cedar Key, Florida, hopes to shed some light on the changes in water quality during the transition from winter to spring and spring to summer. Water samples have also been taken weekly to preserve plankton abundance and the presence of any harmful algae if a mortality event does occur. With the hottest July on record occurring in 2023, temperature could play a role in mortality events, and now researchers are equipped with the right tools and open lines of communication to possibly find a solution to the problem.
3-month-old seed being deployed out on Grayson Bay Oyster Company’s farm in Pensacola, Florida (2023). Photo by: Thomas Derbes II
As with traditional farming on land, oyster farming takes a mentally strong individual with an incredible work ethic and the ability to adapt to change. The Southeast has a resilient system of oyster farmers who display these traits and continue to put their noses down and “plant” seed every year for the continuation of a growing yet small industry, even through the hardest of trials and tribulations. Through collaboration with local and state institutions, stakeholders, programs, and citizens, oyster farmers are hopeful that they can solve this “unexplained mortality event” and help develop resilient farming techniques. An important message is local farms that have environmental and economic impacts cannot exist without the support of their community.
If you’re interested in tracking water quality on select farms, including Grayson Bay Oyster Company, the website is https://shellfish.ifas.ufl.edu/farms-2023/ and it is updated monthly.
We are fortunate to have several whale species that have been spotted in the Gulf of Mexico including humpback whales, Rice whales, fin whales, sperm whales, sei whales, and orca whales. Recently, however, we have seen multiple reports of whale sharks near shore in Destin and Panama City Beach.
Whale sharks, however, are not whales, but the largest shark species and the largest fish alive today. Whale sharks aren’t even closely related to whales. They have gills, not blow holes. They are huge, up to 46 feet in length and weigh up to 22,000 lbs., the weight of two African elephants. Despite their large size, they are filter feeders with plankton being their main food, although they are also known to eat squid, krill, and small baitfish. They glide through the water at speeds of less than 3 m/hr, gently swinging their bodies side to side. They are not aggressive and pose no threats to humans.
Whale sharks prefer warm water, which is why they can be found in tropical areas and are often attracted to coastal areas due to a higher abundance of food. It’s no surprise, then, that they have been spotted in the Gulf. June to October is whale shark season in the Gulf, with Destin sightings being reported previously in 2013 and 2020. They are also found in many other countries around the world including Mozambique, Philippines, Honduras, Ecuador, Australia, Belize, Thailand, Egypt, Mexico, Seychelles, and the Maldives.
Unsurprisingly, many ocean lovers are desperate to get a glimpse of these majestic creatures in the water. However, experts recommend a hands-off policy for these gentle sea creatures. The Okaloosa Coastal Resource Team has been collaborating with NOAA scientists at the University of Southern Mississippi to tag 10 of this year’s visitors to gain valuable insights into their migratory patterns and habitat use. You can follow their Facebook page for updates on current locations and tracking data. https://www.facebook.com/whalesharkresearch
Dotty, a 25 foot female whale shark tagged off Destin, Florida in July 2023 (Alex Fogg).
Welcome to Red Snapper Season 2023! The season began June 1, 2023 at 12:01am for “For Hire” vessels fishing in federal waters and continues through August 25, 2023.
For Florida recreational anglers in state waters, the season started a few days later on June 16. While the summer season ends on July 31, 2023, fishing enthusiasts can look forward to 3-day fishing weekends in Florida State waters later in October and November 2023. This means there are still additional days of red snapper fishing opportunities in 2023, giving you ample time to plan exciting fishing adventures.
Here, we present Bay County’s recent artificial reefs, which serve as prime fishing locations for this year’s seasons. This select collection includes three distinct areas: east (State), south (Federal), and west (State). These sites have had the opportunity to grow and mature, with over 290 reef modules deployed between May 2019 and December 2020.
East Location – Sherman Site
Walter Marine deploys one of nine super reefs deployed in Bay County’s NRDA Phase I project located approximately 12 nautical miles southeast of the St. Andrew Pass. Each massive super reef weighs over 36,000 lbs and is 15 ft tall. Multiple modules deployed in tandem provides equivalent tonnage and structure similar to a medium to large sized scuttled vessel. Photo by Bob Cox, Mexico Beach Artificial Reef Association.
This project was completed in May 2019 in partnership with the Mexico Beach Artificial Reef Association, Florida Fish and Wildlife Conservation Commission, and Florida Department of Environmental Protection. The deployment site in the Sherman Artificial Reef Permit Area is approximately 12 nm southeast of St. Andrew Bay Pass at a depth of approximately 80 feet. A total of twenty-five modules were deployed, including nine 18-ton reefs and sixteen 3-ton reefs.
South Location – Large Area Artificial Reef Site (LAARS) A
Large 45,000 lbs. concrete modules staged for deployment. These were placed by HG Harders and Son in July of 2019.
This project was completed in July 2019 in partnership with the Bay County Artificial Reef Association and the Florida Fish and Wildlife Commission. The deployment site in LAARS A is approximately 12 nm south of the pass, with reef modules located around the center of the permitted area. The reefs are situated in about 105 feet of water. There are seventeen reef modules, including five 22-ton reefs with a height of 18 feet and twelve 2.5-ton reefs with a height of 5 feet.
West Location – SAARS E – L
This area has the largest number of reef modules and permit sites. It includes 154 small pyramids that are 8 ft tall and weigh about 10 tons. There are also 26 large pyramids that are 18 ft tall and weigh about 18 tons. Additionally, 25 concrete disk reefs, weighing about 3 tons each, were deployed nested inside select Super Reefs, adding to the complexity and diversity of the reefs. In total, approximately 980 tons of engineered concrete artificial reef material were placed in 8 permitted areas. These deployments were completed in December 2020 with the support of the Mexico Beach Artificial Reef Association.
Bay County’s NRDA Phase II deployment in Small Area Artificial Reef Sites (SAARS) E – L are located 11 – 15 nautical miles (nm) southwest of St Andrew Bay Pass in Florida state waters. (Source ArcGIS mapping software).
This monitoring dive was conducted by FWC in January 2021, shortly after the reefs were deployed. You can move the 360 deg video image to experience what the divers see and observe.
Below is an overview map of these three prime snapper sites!
Wishing everyone great fishing days on the water with family and friends!
Chantille Weber, Coastal Resource Coordinator, UF/IFAS Extension Bay County
L. Scott Jackson, Bay County Extension Director, UF/IFAS Extension Bay County and Florida Sea Grant
An Equal Opportunity Institution. UF/IFAS Extension, University of Florida, Institute of Food and Agricultural Sciences, Andra Johnson, Dean for UF/IFAS Extension. Single copies of UF/IFAS Extension publications (excluding 4-H and youth publications) are available free to Florida residents from county UF/IFAS Extension offices.
