Stem to Stern (Northwest Florida November 2, 2023)

Stem to Stern (Northwest Florida November 2, 2023)

Organized and sponsored by Florida Sea Grant, the “Stem to Stern” workshop in November 2023 at the Emerald Coast Convention Center marked a significant gathering in marine conservation and management. This event drew together legal experts, representatives from the Florida Fish and Wildlife Conservation Commission (FWC), local marine resource coordinators, law enforcement, and industry stakeholders to tackle critical issues facing Florida’s marine environments. Through discussions that ranged from legal frameworks for boating and waterway access to environmental conservation strategies, the workshop facilitated a deep dive into the complexities of marine policy and stewardship. Discover new programs, insights, and collective expertise shared at “Stem to Stern.”

Florida Sea Grant Boating and Waterways Workshop

November 2, 2023 Emerald Coast Convention Center

1250 Miracle Strip Parkway SE – Ft. Walton Beach FL

9:00 – 9:25 WELCOME AND INTRODUCTIONS

Welcome

Rick O’Connor (Florida Sea Grant UF IFAS Extension)

Moderators –Mike Norberg and Jessica Valek (Okaloosa County)

[youtube https://www.youtube.com/watch?v=99jwUil1tzY?feature=oembed&enablejsapi=1]

Panel Discussion

Ryan Hinely (Northwest Florida Marine Industry)

Capt. Keith Clark (Florida Fish and Wildlife Conservation Commission)

Cecilia James (Panhandle Association of Code Enforcement – PAOCE)

Robert Turpin (Escambia County Division of Marine Resources)

Glenn Conrad (U.S. Coast Guard Auxiliary)

Phil Horning (Florida Fish and Wildlife Conservation Commission)

Pebbles Simmons (Florida Fish and Wildlife Conservation Commission)

9:25 – 10:10 BOATING AND WATERWAY ACCESS

Resources:

Boating, Waterways, and the Rights of Navigation in Florida (2019, 5th Edition)

Moderator – Tom Ankersen (Florida Sea Grant/UF IFAS Extension, Prof Emeritus)

Anchoring and Mooring

Brendan Mackesey (Pinellas County)

[youtube https://www.youtube.com/watch?v=Lmbz2gO2Cpc?feature=oembed&enablejsapi=1]

Boating Restricted Areas

Byron Flagg (Gray Robinson Law Firm)

[youtube https://www.youtube.com/watch?v=tzbSVqn36WY?feature=oembed&enablejsapi=1]

10:10 – 10:15 Break

10:15 – 11:15 REGULATION AND ENFORCEMENT

Moderator – Robert Turpin (Escambia County Division of Marine Resources)

Marine Enforcement of Derelict and At-Risk Vessels

Resources: FWC Derelict and A-Risk Vessels

Phil Horning (Florida Fish and Wildlife Conservation Commission)

Capt. Keith Clark (Florida Fish and Wildlife Conservation Commission)

Lt. Jarrod Molnar (Florida Fish and Wildlife Conservation Commission)

Lt. Shelton Bartlett (Florida Fish and Wildlife Conservation Commission)

[youtube https://www.youtube.com/watch?v=yn9d1ljeZNw?feature=oembed&enablejsapi=1]

At Risk Vessels

Resources: FWC Derelict and A-Risk Vessels

Phil Horning (Florida Fish and Wildlife Conservation Commission)

[youtube https://www.youtube.com/watch?v=R8OotG12tR4?feature=oembed&enablejsapi=1]

Florida Vessel Turn-in Program (VTIP)

Resources:FWC Florida Vessel Turn-in Program (VTIP)

Phil Horning (Florida Fish and Wildlife Conservation Commission)

[youtube https://www.youtube.com/watch?v=dVbTH9bt0O0?feature=oembed&enablejsapi=1]

Partnering with FWC to Remove Derelict Vessels

Resources: FWC Derelict Vessel Removal Grant Program

Chantille Weber (UF IFAS Extension) and Scott Jackson (Florida Sea Grant, UF IFAS Extension)

[youtube https://www.youtube.com/watch?v=y1R3-qxY184?feature=oembed&enablejsapi=1]

11:15 – 12:15 Lunch

Post Lunch Q&A Derelict Vessel Discussion

[youtube https://www.youtube.com/watch?v=dX4i9XOhmHQ?feature=oembed&enablejsapi=1]

12:15 – 12:55 WATERWAY ENVIRONMENTS

Moderator – Dr. Laura Tiu (Florida Sea Grant, UF IFAS Extension)

Update on Giant Salvinia

Resources: FWC Giant Salvinia

Derek Fussell (Florida Fish and Wildlife Conservation Commission)

[youtube https://www.youtube.com/watch?v=yrMDSbAz7vE?feature=oembed&enablejsapi=1]

Boating and Seagrass protection

Resources: Florida Sea Grant, Be Seagrass Smart – “Scars Hurt”

Savanna Barry (Florida Sea Grant, UF IFAS Extension)

[youtube https://www.youtube.com/watch?v=fCTWF7xBgdo?feature=oembed&enablejsapi=1]

12:55 – 1:20 BOATING SAFETY

Moderator – Chantille Weber (UF IFAS Extension)

Pontoon Boating Safety (Law Enforcement’s Perspective)

Kyle Corbitt (Okaloosa County Sheriff’s Department)

[youtube https://www.youtube.com/watch?v=Flm4DrUXk5Y?feature=oembed&enablejsapi=1]

Pontoon Boating Safety (Operator’s Perspective)

Resources: Okaloosa County Watersport Operators Coalition

John Stephens (Okaloosa County Watersport Operators Coalition)

[youtube https://www.youtube.com/watch?v=fXRiP0SOZZ0?feature=oembed&enablejsapi=1]

1:20 – 1:25          Break

1:25 – 2:10 PUBLIC EDUCATION

Moderator – Rick O’Connor  (Okaloosa County)

Communicating with the Public

Resources: Florida Sea Grant Communications

Donielle Nardi (Florida Sea Grant, UF IFAS Extension)

[youtube https://www.youtube.com/watch?v=fVA2vVt11xQ?feature=oembed&enablejsapi=1]

Florida Friendly Visitor Program (Working with Recreational Boaters)

Resources: Florida Sea Grant – About Us!

Anna Braswell (Florida Sea Grant, UF IFAS Extension)

[youtube https://www.youtube.com/watch?v=Ca0Bt3jlYrg?feature=oembed&enablejsapi=1]

2:10 – 3:00 POLLUTION AND MARINE DEBRIS

Moderator – Thomas Derbes (Florida Sea Grant, UF IFAS Extension)

Clean Vessel Program

Resources:

Clean Vessel Program and help for Marinas

Clean Vessel Program and how Boaters can Help Keep Florida’s Waters Clean!

Vicki Gambale (Florida Sea Grant, UF IFAS Extension)

[youtube https://www.youtube.com/watch?v=BYzESZAYYgc?feature=oembed&enablejsapi=1]

Preparing for Storms

Resources:

UF/IFAS Disaster Preparations and Recovery

UF/IFAS and Florida Sea Grant – Hurricane Prep: Securing Your Boat

Scott Jackson (Florida Sea Grant, UF IFAS Extension) and Chantille Weber (UF IFAS Extension)

[youtube https://www.youtube.com/watch?v=NbCiYS-E1UA?feature=oembed&enablejsapi=1]

3:00 – 3:15          EVALUATIONS – Rick O’Connor (Florida Sea Grant, UF IFAS Extension)

3:15 – 3:45          WRAP UP – Robert Turpin (Escambia County Marine Resources)

PROGRAM SPONSORS

FWC Logo Destin Fort Walton Beach Logo

 

Acknowledgement

We extend our deepest gratitude to all who contributed to the success of the “Stem to Stern” workshop. To our esteemed speakers, whose expertise and insights into marine conservation and management have been invaluable, we offer our sincere thanks. Your presentations were not only informative but also inspirational, guiding us toward a more sustainable future for our waterways.

A special acknowledgment goes to the members of the planning and program committee. Your dedication and hard work in organizing this event did not go unnoticed. From the initial planning stages to the execution of the workshop, your efforts have been the backbone of this successful gathering.

We also want to thank the authors of the surveys that have provided us with essential data and perspectives. Your research and analysis contribute significantly to our understanding of the challenges and opportunities within Florida boating and waterways.

Lastly, we are incredibly grateful for the support from our sponsors. Your generosity and commitment to Florida Sea Grant and marine conservation have been crucial in bringing this workshop to life. Your support not only made this event possible but also highlights your dedication to safeguarding our marine ecosystems.

Together, we have taken an important step towards protecting and enhancing Florida’s waterways. Thank you for your contributions, commitment, and shared vision for a sustainable future.

Information edited and compiled by: L. Scott Jackson, Chantille Weber, and Amon Philyaw, UF/IFAS Extension Bay County

An Equal Opportunity Institution. UF/IFAS Extension, University of Florida, Institute of Food and Agricultural Sciences, Andra Johnson, Dean. 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.

 
Pompano! The Silver Surfers of the Emerald Coast

Pompano! The Silver Surfers of the Emerald Coast

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.

Kids catching Pompano off the beach
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.

Fertilized pompano eggs
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.

Florida Pompano on the beach
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.

Kid with Pompano
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!

References

Main, K., Rhody, N., Nystrom, M., & Resley, M. (2007). Species Profile – Florida Pompano. Southern Regional Aquaculture Center Fact Sheets. https://fisheries.tamu.edu/files/2013/09/SRAC-Publication-No.-7206-Species-Profile-Florida-Pompano.pdf

Local Oysters Displaying “Green Gills” 

Local Oysters Displaying “Green Gills” 

And it’s a good thing! Green gill oysters are prized in the oyster community. In the Carolinas and Northern France, green gill oysters are a seasonal, cherished crop and a product of the saying “You are what you eat!” The phytoplankton, Haslea ostrearia, is the typical culprit, and their distribution is measured by direct observation from plankton tows or the occurrence of green-gilled oysters. The exact distribution is unknown, but there are reports of H. ostrearia throughout the Atlantic, Pacific, and Indian oceans. Haslea ostrearia is a beautiful pennate diatom that contains a water-soluble blue pigment known as marennine (More Here). Marennine’s production is stimulated by long photoperiods, blue light, and high light/low cloud weather. It can also be released into the water and into the flesh of organisms (typically oysters) that consume them.

Green-gill oyster on the farm
Fresh out of the water Grayson Bay Oyster with green gills! – Brandon Smith, Grayson Bay Oyster Company

Pensacola Bay, and surrounding areas, had a pretty mild fall in terms of rainfall, and the bays have turned a beautiful green-blue hue as the bays have risen in salinity and phytoplankton typically found in the Gulf of Mexico were able to survive. Brandon Smith, owner of Grayson Bay Oyster Company, was out working his farm January 7th, 2024, and sent a text to me saying “take note of the green gills,” and I was very shocked and happy to see actual, green-gilled oysters in our local waterways. He graciously harvested a few dozen to examine (and let me taste test), and I was able to confirm the presence of green gills in the oysters. After further research on H. ostrearia, it seems as though the pennate diatom made it into our bays and is the culprit of this wonderful surprise.

Oyster displaying green-gills
A local Grayson Bay Oyster displaying green-gills – Thomas Derbes II

When I shucked my graciously donated oysters from Grayson Bay, I was reminiscing on the first time I came across green-gilled oysters. The first batch of green gill oysters I ate came from an oyster farm in North Carolina called N. Sea Oyster Company. Their green-gilled beauties “Divine Pines” were requested by a wedding I was catering for, and I was able to slurp down one to get talking and tasting notes. The seasonal Divine Pines offered a sweet yet salty taste and became one of my favorite out-of-area oysters to serve at events and to personally consume. While beautiful, the green-gilled oysters are usually only found in the fall/winter months. These green-gilled Grayson Bays were very comparable and offered a salty yet very sweet and minerally finish. The H. ostrearia is responsible for not only the green gills, but the sweet tasting notes, and I highly recommend adding any green-gilled oyster to your fall/winter raw bar selection.   

References:

Turpin, Vincent & Robert, J-M & Philippe, Goulletquer & Massé, Guillaume & Rosa, Philippe. (2008). Oyster greening by outdoor mass culture of the diatom Haslea ostrearia Simonsen in enriched seawater. Aquaculture Research. 32. 801 – 809.

A Brief Explanation About Triploid Oysters

A Brief Explanation About Triploid Oysters

When you sit down and enjoy some fresh, farmed oysters during the summer, you might notice that the oyster is not watery but yet plump and full of meat, unlike the usual wild oysters. These farmed oysters are very special and are called “triploid oysters.” What makes an oyster a triploid? Well, it all starts in the oyster hatchery and involves using tetraploid male oysters to breed with diploid female “wild” oysters.

Before we dive into triploids, let’s go over some definitions. A diploid organism contains two sets of chromosomes. As humans, we have two sets of chromosomes, and the pair is formed by a chromosome from the mother and a chromosome from the father. Triploid organisms contain three sets of chromosomes and while very rare, triploidy does happen in the wild. Tetraploid organisms have four sets of chromosomes and are usually only formed in a laboratory setting using pressure or other means to cause tetraploidy. When you breed a tetraploid oyster with a diploid oyster, the result is a triploid oyster.

Spawning Chamber
A hatchery worker keeping an eye on spawning chambers with diploid oysters – Thomas Derbes II

Inside of an oyster hatchery, you will see many small breeding chambers for the oysters. When a hatchery decides to spawn oysters, they place a single wild diploid oyster in each chamber. During spawning, the hatchery will introduce a cycle of cold then warm water and this cycle is repeated until a spawn is triggered. Hatchery workers will closely watch the oysters and will shut off the water supply to any oyster that has spawned so they can trap the gametes in the chamber. You can determine the sex of an oyster by watching it spawn; a female oyster “claps” out her eggs while a male opens slightly and releases sperm into the water. When spawning for triploid oysters, the hatchery workers will only obtain the eggs from female diploid oysters and discard any diploid sperm to avoid cross contamination. During the spawn, a worker will strip the sperm from male tetraploid oysters and once all female diploids are done spawning, they will introduce the tetraploid sperm to the diploid eggs. After 30 minutes, fertilization rates are calculated and stocking densities are formed.

Tub of Triploid Oyster Seed
3-month-old triploid seed – Thomas Derbes II

Why Would a Farmer Want to Grow a Triploid Oyster?

There are many benefits for a farmer to raise triploid oysters. First and foremost, triploid oysters are sterile. This is a major benefit for the farmers during the summer months. During the summer, wild diploid oysters spawn, and when they spawn, the meat turns very thin and watery. In the Panhandle of Florida, the harvest of wild oysters is prohibited in the summer and only farmed oysters can be harvested.

Another added benefit is the increased growth rate of a triploid oyster compared to a diploid oyster. As mentioned above, triploid oysters lack the ability to spawn. Since a triploid oyster does not have to spend energy producing gametes, it puts all of its energy into growing its shell and meat. A typical diploid oyster could take more than two years to reach harvest size, where a triploid oyster can reach harvest size within 8 months (commonly 12-24 months but there are usually some fast growers in a batch).

There are more benefits of triploid oysters including selective breeding for disease resistance and environmental sustainability. With the use of triploid oysters for oyster farming, wild stocks go relatively unaffected and help contribute to more sustainable aquaculture practices. I hope this brief explanation of triploid oysters will help you understand more about the somewhat unknown world of oyster aquaculture. With demand for oysters on the rise, triploid oysters hold great promise in meeting the needs of an ever-growing oyster aquaculture industry.

2023 Pensacola Bay Snake Watch Annual Report

2023 Pensacola Bay Snake Watch Annual Report

I began this project in 2022 wanting to know which of the 40 species of snakes known to inhabit the Pensacola Bay area were encountered by people.  I also wanted to know where they were encountering them and what time of year.  This information would be used in my Living with Snakes program and provide better information than field guides and publications that covered a broader area.  The 40 local species were divided into six categories: small snakes (<12”), mid-sized snakes (12-24”), large snakes (> 24”), water snakes, venomous snakes, and non-native snakes. 

The red rat snake, or corn snake. Photo: Molly O’Connor

Which snakes did people encounter?

In 2023 there were 215 snake encounters between Jan 1 and Dec 10.  This is a 136% increase over 2022.  This is probably not because of more snakes but rather more residents participating in the project. 

Of the 40 species possible, 24 (60%) were encountered.  This is a 13% increase over 2022.  Again, I feel this is due more to increasing participation. 

The most frequently encountered species were:

  1. Cottonmouth – 49 records (23%)
  2. Southern Black Racer – 35 records (16%)
  3. Banded Water Snake – 26 records (12%)
  4. Eastern Garter Snake – 17 records (8%)
  5. Eastern Coachwhip – 11 records (5%)

The Southern Black Racer was the most frequently encountered snake in 2022 (23%), followed by the cottonmouth (16%).  As you can see, the frequency of encounters remained the same this year, but the species flipped.  The Eastern Ribbon Snake, which was third at (14%) in 2022 did not make the top five this year. 

The rarest snakes – those encountered only once or not at all – included:

Encountered once:                                     

Rough Green Snake                                                                 

Eastern Kingsnake                                      

Eastern Coral Snake

NOT Encountered at all:

Smooth Earth Snake

Marsh Brown Snake

Southern Hognose Snake

Mole Kingsnake

Scarlet Kingsnake

Eastern Indigo Snake

Black Swamp Snake

Glossy Crayfish Snake

Queen Snake

Midland Watersnake

Yellow Bellied Water Snake

Diamondback Water Snake

Western Green Water Snake

Western/Eastern Mud Snake

Rainbow Snake

Of the four species only encountered once, each is considered quite rare for encounters.  The Eastern Kingsnake was once common but has declined over the years.  The Eastern Coral Snake is quite common, but its behavior and activity make it rare to encounter.  Some snake experts have never seen one in the wild. 

Of the 16 species not encountered at all, three are small snakes whose size and habits make them difficult to detect.  Two are mid-sized but their habits also make them hard to detect.  Nine are water snakes who live in swampy environments along our rivers.  You would have to be out there to encounter them, and few people are.  Two species, the Southern Hognose and the Eastern Indigo Snake, are state and federal listed and are extremely rare.  

The gray rat snake, also known as the oak snake. Photo: Nick Baldwin

Where did people encounter these snakes?

I divided the bay area into four regions: North Escambia, South Escambia, North Santa Rosa, and South Santa Rosa. 

North Escambia – 13 species (54% of the total 24 species found this year).

South Escambia – 16 species (67% of the total).

North Santa Rosa – 17 species (71% of the total).

South Santa Rosa – 11 species (46% of the total). 

There is not much difference between these.  In Escambia County more encounters occurred in the southern portion of the county.  For Santa Rosa County it was the opposite.  Whether this is because there are more snakes in these locations, or more participants in the project cannot be said.  We will pay more attention to this next year.    

Species that were found in ALL four regions included:

Eastern Garter Snake

Gray Rat Snake

Corn Snake

Southern Black Racer

Coachwhip

Cottonmouth

Species only found on one of the four regions included:

Eastern Kingsnake

Florida Pine Snake

Brahminy Blind Snake

Rough Earth Snake

Pinewoods Snake

Eastern Coral Snake

What time of year were these snakes encountered?

Winter – 57 encounters; 13 species

Spring – 80 encounters; 20 species

Summer – 52 encounters; 18 species

Fall – 17 encounters; 10 species

There was an obvious decline in encounters in the fall.  Many species are beginning to settle in for the winter this time of year, but many others breed, and thus should be moving (at least the males).  I know some volunteers ceased looking, but others I know who search weekly, or daily, did not encounter as many snakes. 

Only one species was encountered every month of the year.  This was the cottonmouth

The Eastern Garter Snake was seen every month except June and October; it seems to be active year-round. 

The Southern Black Racer was missing in January, November, and December – suggesting a dislike for the cold. 

NOTE: many of these hibernating snakes will emerge on warmer sunny days during winter and can be encountered. 

SPRING was the time of year with the highest encounter rate and species encountered.  This would make sense in two parts; (1) they are emerging seeking food after non-feeding during winter, (2) they are emerging looking for mates because it is breeding season for many.  Five species were only encountered in the early part of the year.  Two species were only found in winter and one species was only found in the spring. 

Eastern diamondback rattlesnake crawling near Ft. Pickens Campground. Photo: Shelley Johnson

What about the venomous snakes?

As expected, most are concerned more about the encounters with venomous snakes.  There are six venomous species listed in the state of Florida, four inhabit the Pensacola Bay area.  All four were encountered in 2023. 

  1. Cottonmouth – was encountered in all regions, each month of the year, it was the most commonly encountered snake in our area this year.
  2. Eastern Diamondback Rattlesnake – was encountered seven times, only during the spring and summer, and in three of the four regions in our area.  This snake is pretty common but not commonly encountered where people most often reside and play.  Though encounters do occur in residential neighborhoods, they are rare. 
  3. Dusky Pygmy Rattlesnake – was encountered six times, during spring, summer, and fall, and two of the four regions in the bay area. 
  4. Eastern Coral Snake – was encountered once, during the spring, and in only one of the four regions in the bay area.  Again, this snake is actually quite common, but its behavior makes it difficult to encounter.  So, encounters with this species are rare. 

Summary

In 2023 60% of the known species of snakes that inhabit the Pensacola Bay area were encountered by residents at some time during the year.  Most encounters occurred in the spring and summer and encounters occurred throughout the entire region.  The cottonmouth was the most frequently encountered species this year but rare species, such as the Eastern hognose, Eastern kingsnake, and the Florida pine snake were seen – and that is pretty exciting.  The snake diversity in the Pensacola Bay area seems good.  There is concern that a non-native parasite decreasing the populations of some species in central and south Florida may make its way to the panhandle.  We are participating in a project entitled Snake Lungworm Alliance Monitoring (SLAM) that collects deceased snakes for examination by researchers.  If you find a deceased snake in good enough condition to be dissected, place it in a plastic Ziplock bag, label with the date, location (GPS preferred), and your contact information.  You can then bring it to the Escambia County Extension office or freeze it and call me – (850-475-5230) or email roc1@ufl.edu and we will arrange pick up. 

We plan to continue the Snake Watch Project in 2024 and encourage all who see snakes to contact me at the above email address.  We will also be offering the Living with Snakes presentation.  If your community group is interested in this talk, contact me. 

Cottonmouths of Our Barrier Islands

Cottonmouths of Our Barrier Islands

I am going to end 2023 with an article on a project I hope to conduct in 2024.  It will focus on insular cottonmouths and will focus on the western panhandle, though those in the eastern panhandle might be interested and could help.  For obvious reasons, conducting this project as a citizen science one is not the best idea.  Cottonmouths are venomous snakes and can be dangerous, but there could be opportunities where citizens could be of help (a road killed snake for example). 

The cottonmouth is one of the more commonly encountered snakes in the western panhandle. Photo: Bob Jackson

The story is quite interesting.  Most books and articles on cottonmouths indicate they inhabit freshwater habitats where water flow is slower.  Though found in the back waters of rivers, they are not as common within the rivers themselves.  Golf courses, ponds, lakes, and reservoirs are other places they frequent.  There are records of them on coastal barrier islands and in the upper Florida Keys.  Swimming across saltwater is not surprising but existing on a xeric, sandy barrier island would not fit the typical habitat of this snake.  Most of the accounts on barrier islands are in the Big Bend region and many know that there are freshwater habitats on some of these islands.  If a cottonmouth could reach the island, there could be a suitable habitat for them.  But you could argue that these habitats are not large enough to support a large population.  The carry capacity of a population is determined by the amount of space and resources available.  Cottonmouths are opportunistic feeders – so, finding food would not be a big issue – but with limited acreage of needed freshwater the carrying capacity would be lower, and populations of cottonmouths lower as well.  Then there is Seahorse Key.  

Seahorse Key Photo: Courtesy of flicker

Seahorse Key is 3 miles southwest of Cedar Key and can only be accessed by boat.  It is said that the density of cottonmouths is higher there than anywhere in the state.  Dr. Coleman Sheehy (University of Florida) stated they typically encountered 30 snakes while conducting beach walk surveys and they estimated about 600 cottonmouths on the island.  The fact that cottonmouths were there was not surprising, but the high density – in a habitat not really suitable for such – was. 

There is another story on addressing that issue you can read at  – https://nwdistrict.ifas.ufl.edu/nat/2015/08/07/the-mystery-on-seahorse-key/.    

Depending on which source you use, there are up to three subspecies of cottonmouths found in the U.S.  The Florida cottonmouth (Agkistrodon piscivorous conanti) is the one found on Seahorse Key, the rest of peninsula Florida, and in the panhandle as far west as Gulf County.  The eastern cottonmouth (A.p. piscivorous) is found from Bay County west to Escambia County on the Florida/Alabama line, and north into the coastal plains of Alabama and Georgia.  The western cottonmouth (A.p. leucostoma) is found from the Alabama/Florida line west to Texas and north to Arkansas.  Dr. Harvey Lillywhite (University of Florida), and others, were curious as to whether the Florida cottonmouth was adapting to saltwater.  An interesting question and, again, how these snakes are surviving and thriving on Seahorse Key is a part of understanding this story.  In recent years there has been a push to declare the Florida cottonmouth its own species – Agkistrodon conanti.  The Florida Museum of Natural History’s history article1 on cottonmouths list as such.  Dr. Steve Johnson’s article2 lists the snake as Agkistrodon piscivorous and leaves it there, not dividing into subspecies.  Many current researchers agree with the identification of A. conanti for the Florida cottonmouth – the one found on the islands of the Big Bend – and the one of interest in whether it is adapting to saltwater environments.  That brings me back to the project we are planning to begin in 2024 in the western panhandle. 

Cottonmouths definitely exist on the barrier islands in Escambia County.  We have two islands – Santa Rosa Island and Perdido Key.  There are freshwater sources on both islands and suitable habitat for cottonmouths.  The swim from the mainland to reach these islands is much shorter than for those at Seahorse Key.  At Perdido Key a swim of 600 feet would allow a snake to reach the island – easy.  The swim from Perdido Key to Santa Rosa Island is less than a mile (about 4000 feet) but the currents in Pensacola Pass are strong and the likelihood of a cottonmouth accessing Santa Rosa Island this way would be low.  However, there are many locations along Santa Rosa Island where the swim would be no more than a mile from the mainland and some, in Okaloosa County, the trip could be made in about 800 feet.  Island access is easy. 

As the Escambia County Extension Agent, I handle the snake calls that come to our office – and there are a lot of them.  In recent years there has been concern from some Perdido Key residents with the number of cottonmouths they are encountering.  One of their questions was whether this was an unusually high encounter rate – Seahorse Key all over.  Conducting surveys in their neighborhood in 2019 I encountered cottonmouths 70% of the time – all of them were juveniles or subadults.  I recommended some landscape changes to deter the snakes from their yards and in 2020 the encounter rate dropped to about 40% of the surveys.  However, it did not rain as much in 2020 and this could have affected the snakes as much, if not more, than the landscaping changes.  The freshwater ponds in the neighborhood used by the snakes were small and ephemeral – they did not have water unless rainfall was present.  So, we did another survey in 2021, it rained more, and encounters increased to 50% of the surveys.  The landscaping may have helped some.  In 2021 I also conducted surveys in the nearby state park and found no significant difference in snake encounters (50%) but the time of day for encounters was different and I did find adult snakes in the state park. 

Note here… I get very few calls on cottonmouths from Santa Rosa Island.  Rather their calls are about eastern diamondback rattlesnakes, which are not encountered as much on Perdido Key.  The question we have on the table now is whether the cottonmouths found on Perdido Key are the Florida cottonmouth (A. conanti) – the one some believe may be adapting to saltwater conditions.  According to Whit Gibbons and Mike Dorcas’s Snakes of the Southeast3 Escambia County Florida is the border between the eastern and the western cottonmouth.  This same guide suggests that the Florida cottonmouth does not exist here. 

So here is the project… which species/subspecies of cottonmouths exist on our barrier islands in the western Florida panhandle? 

How do you tell them apart?

The difference between the Florida cottonmouth and the eastern/western are very minor.  This makes identification in the field hard and dangerous.  The Florida cottonmouth will have two distinct stripes running vertically across the front of its snout.  The eastern/western cottonmouth will not have these.  To determine whether these stripes exist requires getting much closer to the snake than is recommended.  THIS IS A DANGEROUS SNAKE AND CLOSE ENCOUNTERS ARE NOT RECOMMENDED.  However, a road killed snake can be examined using a stick at least 12” long.  NOTE: SNAKES, EVEN RECENTLY KILLED, HAVE BEEN KNOWN TO BITE.  DO NOT HANDLE A DEAD SNAKE UNLESS YOU ARE SURE IT IS DEAD.  You may have a camera that can get a good photo of the snout FROM A SAFE DISTANCE (cottonmouths like to rest with their head tilted upwards at a good angle for such a photo). 

You can see the light vertical bands on the snout of this snake indicating it is the Florida cottonmouth. Photo: University of Florida.
Notice the light bands across the snout of this Florida Cottonmouth. Photo: Kristen Grace.
This cottonmouth has a uniform coloration across the snout – indicating that it is an eastern cottonmouth. Photo: Ricky Stackhouse.

We are planning a program on this project in early April for Escambia and Santa Rosa Counties.  If you are in Okaloosa, Walton, or Bay counties and would like the program presented there – let me know. 

Rick O’Connor – roc1@ufl.edu

References

1 Florida Museum of Natural History

https://www.floridamuseum.ufl.edu/florida-snake-id/snake/florida-cottonmouth/.

2 Florida Snakes. Cottonmouth or Water Moccasin.  University of Florida Department of Wildlife Ecology and Conservation.  UF Wildlife – Johnson Lab. https://ufwildlife.ifas.ufl.edu/snakes/cottonmouth.shtml.

3 Gibbons, W., Dorcas, M. 2005. Snakes of the Southeast.