Introduction
If you’re anything like me — someone who loves salty air, turquoise waters, and mixing a little adventure with some relaxed island vibes — then my recent trip to Key Largo, Florida totally delivered. I touched down expecting sunshine and scenic views, and left with memories of coral reefs, mangrove paddles, tropical cuisine and hidden charms I hadn’t anticipated. Here are the 12 Best & Fun Things To Do in Key Largo — the spots I loved, the moments I’ll always remember, and why I think you’ll love them too.
12 Best & Fun Things To Do In Key Largo, FL (2025)
1. Snorkel or Dive at John Pennekamp Coral Reef State Park
One of my first full‑day outings was here, and it set the tone for the trip: clear water, vibrant reef life, and a sense of being below the surface of something magical. This park was the first underwater park in the U.S., and it protects a large reef ecosystem off Key Largo.
Why I loved it: I hopped aboard a snorkel tour, floated above coral canyons, spotted colorful fish and felt connected to nature in a way I hadn’t in a while.
Tip: Go early in the day for calmer water and better visibility. Bring reef‑safe sunscreen and a waterproof camera if you have one.
2. Take a Mangrove Kayak / Paddleboard Adventure
For a slower‑paced yet deeply satisfying experience, I rented a kayak and paddled through mangrove tunnels just off the coast. It felt quiet, removed and intimate. One guide mentions kayaking or paddleboarding through Key Largo’s mangroves as a must‑do. Why I loved it: I paddled gently, saw herons and maybe even a manatee (no guarantee!), and appreciated how much nature thrives here.
Tip: Wear a hat, bring water, and ask for a guided tour if you want added context on the ecology.
See Also: 20 Best & Fun Things To Do In Big Bear Lake, CA
3. Visit the Historic African Queen Steam Boat
Film buffs and casual visitors alike will enjoy boarding the historic steam boat known from the Humphrey Bogart film of the same name. It’s an unexpected detour—part history, part scenic ride. One article notes this as a fun historical stop.
Why I loved it: The boat’s creak, the slow glide through water, the sense of stepping into the past—it added charm to my itinerary.
Tip: Check departure times ahead of your trip and arrive with time to enjoy the dockside atmosphere.
4. Take a Deep‑Sea Fishing Charter
Whether you’re a seasoned angler or a curious novice, Key Largo’s waters deliver. The tourism board mentions fishing for mahi, sailfish, wahoo — plenty of big‑water thrills here.
Why I loved it: On my short charter trip I felt the adrenaline of the reel bending, the open sea around me, and a sense of accomplishment when I landed a catch.
Tip: Book with a trusted charter company, wear non‑slip shoes and perhaps plan for a “catch & cook” dinner later.
5. Enjoy a Sunset Tiki Cruise
One evening I traded hiking boots for flip‑flops and joined a floating tiki bar cruise. Picture tropical cocktails, salt wind, live music, and the sun slipping into the horizon. It’s even described as a top fun activity in Key Largo.
Why I loved it: The relaxed vibe, the golden light on the water, and the feeling that everything slows down just enough.
Tip: Bring a light jacket (it can chill on the water) and maybe a small speaker for your own tunes if allowed.
6. Explore the Nature at Dagny Johnson Key Largo Hammock Botanical State Park
Stepping away from the water for a bit, I discovered this state park — a lesser‑known gem full of native plants, trails and birds. It’s noted for its protected species and tranquil walks.
Why I loved it: Wandering under shady trees, hearing birds, feeling grounded — a nice counterpoint to the open water adventure.
Tip: Use bug spray, stay on trails, and bring binoculars if you enjoy birdwatching.
7. Walk or Bike the Overseas Heritage Trail
For a slower pace and local flavor, I hopped on a section of the multi‑use trail that stretches across the Keys. According to guides, the trail is scenic and ideal for walking or biking.
Why I loved it: Cruising on foot or pedal, breeze in my face, snapshots of coastline and mangrove — it felt free.
Tip: Bring a bike if you have one, or rent locally. Go early morning to avoid midday heat.
8. Savor Local Seafood & Key Lime Pie
You can’t come to Key Largo and skip the food — fresh catch, tropical flavors, and iconic Key lime pie. Local dining guides highlight these as standout experiences.
Why I loved it: One dockside dinner, lobster over open flame, waves lapping nearby — it felt like the reward for a day of exploring.
Tip: Choose a waterfront table at sunset. Don’t leave without trying dessert — the key‑lime pie is a must.
9. Visit the Underwater Research Lab Aquarius Reef Base (Visible From Tours)
For something a little different, I learned about this underwater habitat near Key Largo — used for marine research and exploration. It’s a nice side fact to enrich your reef visit.
Why I loved it: Knowing that scientists live underwater nearby made my snorkel/swim adventures feel richer and more meaningful.
Tip: While you won’t dive inside (that’s specialized), ask dive shops about reef tours or info on the habitat.
10. Relax at a Quiet Park or Beach Spot
After full days of adventures, I found a quieter afternoon at a small beach/park — perfect for reading, napping or simply being. One guide mentions spots like Harry Harris Park as peaceful places.
Why I loved it: No tours, no boat engines — just sand, shade and calm water. A nice reset.
Tip: Bring a towel or blanket, some snacks, and just allow yourself to slow down.
11. Take a Glass‑Bottom Boat or Reef‑Viewing Tour
For those who might not want full dive gear, I tried a glass‑bottom boat tour in the park — you still see reef life without putting your face underwater. It’s featured in snorkel/reef write‑ups.
Why I loved it: I sat back, pointy‑toed fish passed below, the boat glided slowly — a great alternative if snorkeling isn’t your thing.
Tip: Bring sunglasses and a hat — you’ll still be on a boat in bright sun. Seats fill fast, so book ahead.
12. Capture the Sunset Over Florida Bay
Finally, my favourite moment: standing on a dock as the sun dipped into Florida Bay, palm trees framing the glow, water shimmering. Key Largo’s position makes sunsets special. One visitor guide highlights the magic of this first Key’s early evening.
Why I loved it: After a full day, that light moment felt like a gentle “thank you” from the island.
Tip: Arrive about 30 minutes before sunset, bring a drink or snack, pick a comfortable spot with a view.
Final Thoughts
My stay in Key Largo turned out to be far more than “just another beach vacation.” It became a layering of experiences: underwater worlds, mangrove serenity, sunsets, seafood and simple pleasures. If I were wrapping up advice for someone heading here, it would be this:
- Stay at least 3‑4 days if you can — it gives you time to do at least one water activity, one nature/paddle outing, one chilled day, and a sunset moment.
- Pack for both adventure and leisure — goggles and reef‑safe sunscreen, but also sandals, a jacket for evenings and a good camera.
- Make one experience “special” — for me it was that snorkeling tour; yours could be the fishing charter or sunset cruise.
- Balance activity and rest — after a big morning, give yourself an afternoon to just breathe, read, or explore a quiet spot.
- Support local eats and culture — the seafood here is fresh, the planetary reef facts deepen the appreciation of what you’re seeing.
- Respect the reef and nature — staying on trails in the mangroves, using eco‑friendly sun protection, not disturbing coral or marine life.
- Leave space for the unexpected — some of my favourite memories weren’t planned: spotting a ray gliding beneath me, a street‑side key‑lime pie stop, a slow drift over coral.
If I had to pick one favourite memory: it was floating above coral, snorkel mask on, water above me shimmering, and feeling this mix of awe and calm. That moment told me Key Largo has this unique blend of wild and relaxed you don’t always find.