Welcome to Marathon, the vibrant heart of the Florida Keys! Positioned perfectly between Key Largo and Key West, this family-friendly island city offers a unique blend of laid-back charm and thrilling aquatic adventures. Whether you're planning a fun-filled family vacation, a romantic getaway for two, or a solo expedition, discovering the best things to do in Marathon, Florida Keys is the key to crafting an unforgettable trip. This comprehensive guide is your all-access pass to the top attractions and hidden gems that make this destination so special.

From world-class snorkeling at the protected Sombrero Reef and Coffins Patch to up-close wildlife encounters and iconic landmarks, Marathon packs a punch. We'll dive deep into each activity, providing the essential details you need to plan with confidence. Inside, you will find practical logistics, what to expect at each location, and insider advice to help you build the perfect itinerary tailored to your interests. Planning has become even more streamlined as destinations and tour operators integrate helpful digital tools. For more on how technology is enhancing travel planning, explore this overview on the use of QR codes in travel and tourism to see how accessing information on the go has become simpler.

This guide moves beyond simple suggestions, offering actionable insights for families and couples alike. We'll explore everything from interacting with rescued sea turtles at The Turtle Hospital to feeling the breeze on the historic Seven Mile Bridge. Get ready to explore turquoise waters, pristine beaches, and the rich ecological tapestry that makes Marathon a true gem. Let’s start planning your ultimate Keys adventure

1. Explore the Underwater World: Snorkeling & Diving at Sombrero Reef and Coffins Patch

No list of things to do in Marathon, Florida Keys, would be complete without highlighting its premier attraction: the breathtaking underwater world. The Florida Keys are home to the only living coral barrier reef in the continental United States, and Marathon offers access to some of its most vibrant and protected sections. This isn't just a casual swim; it's an opportunity to immerse yourself in a thriving marine ecosystem.

The two most celebrated sites are Sombrero Reef and Coffins Patch. Sombrero Reef, marked by a historic lighthouse, is a federally protected Sanctuary Preservation Area. This means the coral and marine life are exceptionally pristine. In its crystal-clear waters, you can expect to see schools of yellowtail snapper, graceful sea turtles, and maybe even a gentle nurse shark resting on the sandy bottom.

Coffins Patch is another fantastic reef system, often favored for its shallower depths, which makes it an excellent choice for families and beginner snorkelers. The shallower water allows sunlight to illuminate the intricate coral formations and the rainbow-colored parrotfish that nibble on algae, creating a truly spectacular sight.

How to Experience the Reef

To access these offshore reefs, you'll need to join a guided boat tour. Numerous operators are available, but the quality of your experience often depends on the type of trip you choose.

• What to Expect: Most trips last between 2.5 to 4 hours, including travel time to and from the reef. You'll be provided with all necessary gear, including a mask, snorkel, fins, and a safety vest. The crew will give a detailed briefing on how to use the equipment and snorkel responsibly.
• Cost: Prices typically range from $50 to $90 per person, depending on the trip's duration and inclusions.
• Best Time to Go: Morning trips often provide the calmest sea conditions and the best water clarity, as the sun is high but the afternoon winds haven't picked up.

Pro Tips for an Unforgettable Trip

• Choose Small Groups: Opt for a tour with a limited number of passengers. This ensures a more personal experience, better guidance from the crew, and less crowding in the water.
• Protect the Reef: Use only reef-safe sunscreen. The chemicals in traditional sunscreens are incredibly harmful to delicate coral ecosystems.
• Maximize Your Day: Consider a combo trip that pairs snorkeling with another signature Keys activity. A snorkeling and sunset cruise is a perfect way to combine the thrill of underwater exploration with the serene beauty of a Florida Keys sunset, offering exceptional value and a memorable experience.

2. Drive or Walk the Iconic Seven Mile Bridge

Driving through the Florida Keys is an experience in itself, and its centerpiece is undoubtedly the magnificent Seven Mile Bridge. This engineering marvel is more than just a road; it’s a scenic journey suspended between the turquoise waters of the Atlantic Ocean and the Gulf of Mexico. As one of the most famous and photographed landmarks in the Keys, it’s a must-do activity that encapsulates the region's stunning beauty.

The modern bridge runs parallel to the original structure, a historic relic from Henry Flagler's Over-Sea Railroad that now serves as a popular walking and cycling path. Whether you're driving across or exploring a section on foot, the panoramic vistas are breathtaking. You’ll feel like you’re floating above the water, with endless horizons and the occasional sight of a boat or stingray gliding below.

This attraction is a fundamental part of the Marathon experience, offering a unique perspective of the islands and connecting the Middle Keys to the Lower Keys. It’s the perfect backdrop for unforgettable photos and a quintessential Florida Keys memory.

How to Experience the Bridge

You can enjoy the bridge in several ways, each offering a distinct and memorable viewpoint. Driving across is the most common, but exploring part of the old bridge on foot or by bike provides a more intimate connection to the scenery.

• What to Expect: The drive takes about 10-15 minutes without traffic. For walkers and cyclists, there's a 2.2-mile section of the Old Seven Mile Bridge accessible from Marathon. It leads to the historic Pigeon Key and is a flat, easy path perfect for all fitness levels.
• Cost: Driving across the new bridge is free. Accessing the walking/biking portion of the old bridge is also free.
• Best Time to Go: Sunrise and sunset offer the most spectacular lighting for photos, casting a warm, golden glow over the water and bridge. Early mornings on weekdays are ideal for avoiding traffic and crowds.

Pro Tips for an Unforgettable Trip

• Park and Walk: To truly soak in the views, park on the Marathon side of the bridge (near the Sunset Grille & Raw Bar) and walk or bike the restored section of the Old Seven Mile Bridge.
• Capture the Moment: Bring a camera with a wide-angle lens to capture the bridge's immense scale. The view looking back towards Marathon from Pigeon Key is particularly stunning.
• Combine Your Activities: The Seven Mile Bridge is a highlight of any journey. Pair a drive over the bridge with an afternoon activity, like heading to Bahia Honda State Park on the other side, or make it the grand finale after a morning snorkeling trip for a perfect day in Marathon.

3. Coral Reef Park Company Snorkeling and Diving Tours

For those seeking a structured and expertly guided underwater adventure, the Coral Reef Park Company offers one of the most comprehensive things to do in Marathon, Florida Keys. This full-service operator specializes in taking both novice snorkelers and certified divers to the most spectacular sections of the reef. Their experienced crew provides not just transportation but also valuable instruction and insights into the marine ecosystem.

Going with a dedicated tour company like this ensures a safe, educational, and hassle-free experience. They handle all the logistics, from providing sanitized, high-quality gear to selecting the best reef location based on the day's specific weather and water conditions. This makes it an ideal choice for first-time visitors, families with children, or anyone who wants to dive deeper into the world of marine biology with professional guidance.

How to Experience the Reef

Booking a trip with a professional operator like the Coral Reef Park Company is straightforward and provides a complete package for exploring Marathon's underwater treasures. Their trips are designed to cater to various skill levels, from snorkeling to multi-level diving certification courses.

• What to Expect: Trips are typically half-day excursions, lasting around 4 hours. You'll receive all necessary equipment, a detailed safety briefing, and in-water supervision. The crew is adept at pointing out unique marine life you might otherwise miss.
• Cost: Snorkeling tours generally cost between $60 and $100 per person. Scuba diving trips and certification courses will have a higher price point.
• Best Time to Go: Morning tours are highly recommended for the calmest waters and clearest visibility. Booking in advance is crucial, especially during peak season (winter and spring break), as spots fill up quickly.

Pro Tips for an Unforgettable Trip

• Book in Advance: Don't wait until the last minute. Secure your spot online or by phone a week or more ahead of time, particularly if you are visiting during a holiday.
• Prepare for the Boat: If you're prone to motion sickness, take medication before departure. Arriving a little early allows for a relaxed check-in and time to listen to the pre-trip briefing.
• Start with Snorkeling: If you're new to the ocean, start with snorkeling to get comfortable before committing to a full scuba certification. You can explore more options for guided Marathon snorkeling tours to find the perfect fit.
• Protect Your Skin & The Reef: Wear a rash guard for sun protection and apply only reef-safe sunscreen at least 30 minutes before entering the water.

4. Visit the Marathon Wild Bird Center

Beyond the reefs and beaches, one of the most rewarding things to do in Marathon, Florida Keys, is to connect with its unique terrestrial wildlife. The Marathon Wild Bird Center offers a moving and educational experience, providing a sanctuary for injured, sick, and orphaned wild birds with the ultimate goal of rehabilitating and releasing them back into their natural habitat.

This non-profit facility allows visitors to get an up-close look at the incredible avian species native to the Keys. As you walk through the open-air enclosures nestled in a natural mangrove setting, you'll encounter majestic pelicans, striking herons, owls, hawks, and many other permanent residents who cannot be safely returned to the wild. It’s a powerful reminder of the importance of conservation and the dedication of the staff and volunteers.

The experience is both heartwarming and informative. Each bird has a story, and the educational displays explain their species, their injuries, and the rehabilitation process. This isn't a zoo; it's a place of healing and a testament to the community's commitment to preserving the delicate ecosystem of the Florida Keys.

How to Experience the Center

The center is designed for a self-guided stroll, allowing you to spend as much time as you wish observing the birds and learning from the informative signs. It’s an easily accessible and highly affordable attraction.

• What to Expect: Plan to spend about one to two hours exploring the grounds. The pathways are well-maintained, taking you through large aviaries where you can see the birds in a comfortable, naturalistic environment. Staff and volunteers are often on hand to answer questions.
• Cost: While there is no set admission fee, a donation is strongly encouraged. As a non-profit, the center relies entirely on public support to fund its rescue and rehabilitation efforts. A suggested donation of $10 per person is typical.
• Best Time to Go: Early mornings are often best for bird activity, as the birds are more active and vocal. This is also a great way to escape the midday heat.

Pro Tips for an Unforgettable Trip

• Bring Binoculars: While many birds are close, a pair of binoculars will help you appreciate the finer details of their plumage and behaviors without disturbing them.
• Ask About Recent Rescues: Engage with the staff and ask about any recent rescues or successful releases. Their stories provide a deeper connection to the center's mission.
• Plan a Diverse Day: Combine your morning visit to the Wild Bird Center with an afternoon on the water. After learning about the local wildlife, you can see them in their natural habitat on a snorkeling and sunset cruise, creating a perfectly balanced day of education and adventure.

5. Visit the Award-Winning Beaches of Bahia Honda State Park

Just a short, scenic drive south from Marathon over the iconic Seven Mile Bridge lies Bahia Honda State Park, an essential stop for anyone visiting the area. Often hailed as having some of the most beautiful natural beaches in all of Florida, this park offers a picture-perfect escape into the wild, serene beauty of the Keys. It’s a place where white sandy shores meet turquoise waters, providing a stunning contrast to the rugged, coral-lined coasts found elsewhere.

Bahia Honda is more than just a beach; it’s a protected sanctuary encompassing over 500 acres of pristine Keys habitat. The park features two distinct beach areas: Calusa Beach on the Florida Bay side and Loggerhead Beach facing the Atlantic Ocean. Both offer calm, shallow waters ideal for swimming and wading, making it a perfect destination for families with young children.

How to Experience the Park

Getting the most out of your visit requires a little planning, as the park’s popularity means it can get busy. The park offers a full day of activities, from sunbathing and snorkeling to hiking and picnicking.

• What to Expect: Upon entry, you can choose where to set up for the day. Amenities include picnic pavilions, kayak rentals, and a nature center. The short walk up the Old Bahia Honda Bridge offers panoramic views of the entire island, a must-do for incredible photos.
• Cost: Park entrance fees are very reasonable, typically around $8 per vehicle (for 2-8 people). This fee grants you access to all facilities for the entire day.
• Best Time to Go: Weekdays are significantly less crowded than weekends. Arriving early, especially before 10 AM, is crucial to secure a good parking spot and a prime location on the beach.

Pro Tips for an Unforgettable Trip

• Arrive Early: The park often reaches capacity on weekends and holidays. Aim to get there shortly after it opens to guarantee entry.
• Snorkel at Loggerhead Beach: While not as vibrant as offshore reefs, the seagrass beds near Loggerhead Beach are great for spotting juvenile fish, crabs, and other small marine life.
• Hike the Nature Trail: Don't miss the short, shaded trail that winds through a coastal hammock, where you can observe native plants and birds. You can learn more about this and other essential spots in our guide to the best places to visit in the Florida Keys.
• Pack Accordingly: Bring plenty of reef-safe sunscreen, water, and snacks, as concessions can be limited. The Florida sun is intense, even on cloudy days.

6. Dolphin Encounter and Marine Mammal Tours

While the reef gets much of the attention, the inshore waters around Marathon are a playground for one of the ocean's most intelligent and charismatic creatures: the bottlenose dolphin. Engaging in a dolphin encounter or marine mammal tour is one of the most heartwarming things to do in Marathon, Florida Keys, offering a chance to witness these graceful animals thriving in their natural habitat. This isn't an aquarium show; it's a respectful and educational journey into the world of wild dolphins.

Tours take you through the calm, mangrove-lined backwaters and channels where pods of dolphins are known to hunt, play, and socialize. Guides are often experts in local marine biology, providing fascinating insights into dolphin behavior, communication, and the complex social structures of the pods you encounter. Seeing a dolphin arc gracefully out of the water against the backdrop of the Florida Keys is a truly unforgettable moment.

How to Experience a Dolphin Tour

To see these magnificent animals, you'll join a dedicated boat tour that specializes in locating and observing local dolphin pods responsibly. These trips prioritize the well-being of the animals, following strict federal guidelines to ensure they are not disturbed.

• What to Expect: Most tours last between 2 to 3 hours. The captain navigates to areas with recent sightings, and once a pod is spotted, the boat will keep a safe distance, allowing you to observe and photograph the dolphins as they go about their day. Some tours may also spot manatees or sea turtles.
• Cost: Prices for these specialized tours generally range from $60 to $100 per person, varying by the tour operator and trip length.
• Best Time to Go: Calm seas make for better viewing. Morning tours are often recommended for the smoothest water and active dolphin behavior, as they are frequently hunting for their morning meal.

Pro Tips for an Unforgettable Trip

• Choose Small Groups: A smaller boat with fewer passengers offers a more intimate and less intrusive experience, often allowing for better viewing angles and more direct interaction with the guide.
• Bring the Right Gear: Don't forget your binoculars for close-up views and a camera with a good zoom lens to capture stunning photos from a respectful distance.
• Ask Questions: Take advantage of your guide's knowledge. Inquire about the dolphins' communication methods, social dynamics, and the local ecosystem. This is a key part of making your trip one of the best family activities in the Florida Keys.

7. Get Up Close with Marine Life at Theater of the Sea

While Marathon offers incredible opportunities to see marine life in the wild, Theater of the Sea provides a unique chance for guaranteed, up-close encounters. Established in 1946, this family-owned marine park is one of the oldest in the world, combining entertainment with education and animal care. It’s a must-visit for families and animal lovers looking for interactive and memorable things to do in Marathon, Florida Keys.

The park is set in a lush, tropical garden environment with lagoons and pools that are home to Atlantic bottlenose dolphins, California sea lions, sea turtles, and various fish species. The main attractions are the live, narrated shows where you can witness the incredible intelligence and agility of these animals. Unlike a massive theme park, Theater of the Sea offers a more intimate and personal atmosphere.

Beyond the shows, the park specializes in interactive programs. You can swim with dolphins, meet a sea lion, or even paint with a dolphin, creating a one-of-a-kind souvenir. It’s an engaging experience that fosters a deeper appreciation for marine conservation.

How to Experience the Park

Theater of the Sea is a self-guided attraction, allowing you to explore at your own pace between the scheduled shows and programs.

• What to Expect: Plan to spend at least half a day to see the main shows and explore the exhibits. The park is very walkable, with shaded paths winding through the tropical gardens. Interactive programs are separate from general admission and must be booked in advance.
• Cost: General admission is around $45 for adults and $35 for children, with interactive programs costing extra. Check their website for current pricing and online booking discounts.
• Best Time to Go: Arrive early to map out your day around the show schedule. Weekdays are typically less crowded than weekends, especially during peak tourist season.

Pro Tips for an Unforgettable Trip

• Book in Advance: The popular "Swim with the Dolphin" and "Meet the Sea Lion" programs have limited availability and often sell out weeks ahead of time. Secure your spot online as soon as you know your travel dates.
• Protect Your Gear: If you're participating in any water-based interactions, bring a waterproof bag for your phone and other valuables.
• Support Conservation: The park's mission extends to animal rescue and rehabilitation. For those passionate about fishing, understanding conservation is key to preserving these vital ecosystems. You can also learn about preventing overfishing to further support marine health.

8. Go for the Big Catch: Marathon Fishing Charters & Sportfishing

Marathon is rightfully known as a world-class fishing destination, and no list of things to do in the Florida Keys would be complete without highlighting this quintessential local activity. Whether you are a seasoned angler or a complete novice, booking a fishing charter offers an unparalleled opportunity to experience the thrill of the chase in these bountiful waters. It’s an adventure that combines stunning scenery with the excitement of reeling in a trophy catch.

The waters surrounding Marathon offer an incredible diversity of fishing environments. You can head offshore for deep-sea sportfishing targeting mahi-mahi, tuna, and marlin. Alternatively, you can fish the reefs for snapper and grouper, or explore the calm, shallow backcountry flats for tarpon and bonefish. A charter captain handles all the logistics, from navigation and finding the best spots to providing all the necessary gear and bait.

This activity is perfect for families looking to create lasting memories or couples seeking an exciting day on the water. The captains are not just boat operators; they are expert guides who teach technique, share local knowledge, and ensure a safe and productive trip for all skill levels.

How to Book a Fishing Charter

Booking a trip is straightforward, with dozens of experienced captains and charter companies operating out of Marathon’s marinas.

• What to Expect: Charters are typically offered as half-day (4 hours), three-quarter day (6 hours), or full-day (8 hours) trips. The captain provides the boat, fuel, fishing licenses, rods, reels, tackle, bait, and often a cooler with ice and water. They will also clean and fillet your catch for you to take home.
• Cost: Prices vary based on the trip's duration, the size of the boat, and the type of fishing. Expect to pay between $600 to $1,000 for a half-day trip and $1,200 to $2,000+ for a full-day offshore adventure.
• Best Time to Go: The best time depends on the species you want to target. However, morning trips generally offer calmer seas and more active fish. Discuss your goals with the captain when booking to align your trip with peak conditions.

Pro Tips for a Successful Fishing Trip

• Book in Advance: Top captains are in high demand, especially during peak season (spring and summer). Book your charter weeks or even months ahead of time to secure your preferred date.
• Communicate with Your Captain: Before your trip, talk to the captain about what species are biting and what type of fishing you're interested in. They can tailor the experience to your preferences.
• Come Prepared: While the charter provides most essentials, be sure to bring polarized sunglasses, a wide-brimmed hat, non-slip shoes, and plenty of reef-safe sunscreen. If you’re prone to motion sickness, take medication beforehand.
• Know Your Catch: Ask your captain about which fish are best for eating versus catch-and-release to support sustainable fishing practices. To dive deeper into what you might catch, check out this guide to fishing in Marathon, Florida.

Marathon, FL: Top 8 Activities Comparison

Attraction	🔄 Complexity	⚡ Resources & cost	⭐ Expected outcome	📊 Ideal use cases	💡 Key advantages / tips
The Turtle Hospital	Moderate — medical facilities & guided tours	Moderate-high — vets, tanks, trained staff; admission/tour fees	High conservation & education impact ⭐⭐⭐⭐	Educational visits, families, volunteers, conservation supporters	Hands-on learning; book tours in advance; arrive early for best light
Seven Mile Bridge	Low — public infrastructure, easy access	Low — free to traverse; limited parking at overlooks	Strong scenic/photogenic value ⭐⭐⭐	Scenic drives, photography, biking, sunset viewing	Visit sunrise/sunset; use designated bike lanes; expect crowds at peak times
Coral Reef Park Snorkeling & Diving Tours	Moderate-high — boat operations, certifications	High — boats, gear, PADI instructors; per-person costs	High marine encounter and skill development ⭐⭐⭐⭐	Snorkel/diving enthusiasts, certification students, small-group tours	Book early; wear reef-safe sunscreen; take seasickness meds if needed
Marathon Wild Bird Rehabilitation Center	Low — small rehab facility with guided tours	Low — volunteer-run, modest admission/donation needs	Good educational & conservation outcomes ⭐⭐⭐	Birdwatching, quiet family visits, volunteering	Best early morning; bring binoculars; consider volunteering/donating
Bahia Honda State Park	Low — maintained state park amenities	Moderate — entrance fee, camping reservations may be required	Excellent beach, snorkeling, and camping experience ⭐⭐⭐⭐	Beachgoers, snorkelers, campers, nature photographers	Arrive early for parking; book campsites far ahead; use reef-safe sunscreen
Dolphin Encounter & Marine Mammal Tours	Moderate — guided boat tours, wildlife protocols	Moderate — vessels, naturalists, safety gear; per-tour fees	High chance of memorable wildlife sightings ⭐⭐⭐⭐	Wildlife viewing, family outings, marine photography	Choose smaller boats, morning departures; bring binoculars and camera
Theater of the Sea	Moderate — live shows and interactive programs	High — animal care, trained staff, higher admission	Entertaining + educational but debated welfare ⭐⭐⭐	Families seeking animal interactions and shows	Book premium experiences early; be aware of animal welfare discussions
Marathon Fishing Charters & Sportfishing	Moderate — licensed captains, gear, regulatory compliance	High — charter fees, boat operation costs; possible extras	Variable — strong potential for trophy catches, outcome depends on conditions ⭐⭐⭐	Anglers, sportfishing enthusiasts, group charters	Book ahead for peak season; check target species seasons; take seasickness meds

Crafting Your Perfect Marathon Adventure

Marathon, the heart of the Florida Keys, isn't just a destination; it's a vibrant tapestry of marine adventures, wildlife encounters, and serene natural beauty. As we've explored, the sheer variety of things to do in Marathon, Florida Keys allows you to design a vacation that is as relaxed or as action-packed as you wish. From the inspiring rehabilitation efforts at The Turtle Hospital and the Marathon Wild Bird Center to the iconic views from the Seven Mile Bridge, each activity offers a unique window into the soul of the islands.

You can spend a morning witnessing the incredible work being done to protect local sea life and then spend an afternoon feeling the warm sand between your toes at a local beach. The key takeaway is that Marathon's attractions are not isolated experiences; they are interconnected pieces of a larger ecosystem and community. Understanding this connection elevates a simple vacation into a truly meaningful journey.

Building Your Ideal Marathon Itinerary

The true magic of a Marathon vacation lies in how you combine these diverse experiences. A well-planned itinerary doesn't mean a rigid schedule. Instead, it means thoughtfully blending activities to maximize your enjoyment and minimize travel time, allowing for that essential, laid-back Keys vibe.

Consider these strategic combinations for an unforgettable trip:

• The Wildlife Enthusiast's Day: Start your morning with an educational tour at The Turtle Hospital. Follow it up with a visit to the nearby Marathon Wild Bird Center to see more of the local fauna. This pairing creates a powerful, cohesive narrative about the conservation efforts that define this community.
• The Family Fun Day: Begin with an exciting and interactive experience at a local marine mammal park. In the afternoon, head to Bahia Honda State Park for some of the best beaches in the Keys, where the kids can swim in the calm, shallow waters while you relax on the sand.
• The Ultimate Water Lover's Adventure: Why choose between the Keys' best on-the-water activities when you can do them all? A perfect day could involve a morning snorkeling excursion to the vibrant Sombrero Reef, followed by an afternoon of pure relaxation at a local sandbar. Cap it all off with a front-row seat to a spectacular sunset from the deck of a boat. This trio of activities delivers the quintessential Florida Keys experience in a single, seamless adventure.

Key Insight: The best Marathon itineraries blend education, relaxation, and adventure. By pairing a conservation-focused morning with an afternoon of sun and sea, you create a balanced and deeply rewarding vacation experience that captures the true spirit of the Florida Keys.

Ultimately, your perfect Marathon adventure is a personal creation. It’s about more than just checking items off a list. It’s about the feeling of the sun on your skin as you cross the Seven Mile Bridge, the awe of seeing a sea turtle up close, and the profound peace of watching the sun dip below the horizon from the water. These are the moments that transform a trip into a collection of cherished memories. As you plan your visit, remember that the most memorable things to do in Marathon, Florida Keys, are often the simple, profound connections you make with the stunning natural world that surrounds you.

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Ready to create your perfect day on the water? Marathon Snorkeling And Sunset Cruise specializes in combining the best aquatic adventures, offering unforgettable snorkeling, sandbar, and sunset cruise combo trips that let you experience it all. Visit Marathon Snorkeling And Sunset Cruise to book your ultimate Keys adventure today.