In Marathon, Florida, colorful coral reefs and tropical fish created a beautiful underwater scene. This place attracts families, couples, and solo travelers with many snorkeling options. In this article I highlight popular snorkeling spots, featuring different aquatic life and charming landscapes like mangroves and reefs.
It encourages readers to discover and enjoy the unique underwater adventures in Marathon, showing why it is a top snorkeling destination. Bellow I tell you 10 best Places for snorkeling in Marathon Florida
Where Is Marathon Florida

Marathon is a lively 10 mile long island in the Florida Keys, perfect for adventure lovers and nature fans. My visit was magical from the moment I arrived on its sunny beaches. It is about an hour drive from Key West and 47 miles from Key Largo, making it a great spot to discover the beautiful waters full of aquatic life.
The island is known for boating, and I found many chances for snorkeling tours, sunset cruises, and more. If you are riding a jet ski or kayaking, you will see attracting views and vibrant coral reefs everywhere. For those who love underwater fun, diving reveals a colorful world of fish. Marathon is truly a playground for explorers.
Best Snorkeling In Marathon Florida
1. Sombrero Reef

On a bright summer morning, I headed to Sombrero Reef, feeling excited about the adventure. The reef, located about four miles from Marathon in the Middle Keys, sparkled in the sunlight. It is the largest reef in the Florida Keys and is surrounded by sandy areas and clear waters, creating paradise full of life. With depths from two to thirty feet, it is perfect for both snorkelers and divers.
As I dove in, I was amazed by the colorful underwater world. Schools of tropical fish swam by like living rainbows, and brain corals spread out beautifully across the sea floor. Each moment revealed new wonders in this underwater haven.
If you are an experienced snorkeler or a beginner, Sombrero Reef offers an unforgettable experience that makes you want to return, showcasing nature beauty beneath the shimmering waves.
2. Coffins Patch
Diving into Coffins Patch was a wonderful surprise that deepened my love for the ocean. The colorful underwater scene showed six lively reefs. Among them, the fairy tale pillar coral and star coral created a busy natural landscape at depths of 10 to 15 feet.
This spot stands out not only for its beauty but also because each reef feels like a piece of paradise. As I swam through the clear waters, schools of butterfly fish and blue tangs swirled around me, their bright colors shining against the fire coral.
The adventure continued at Elbow and Sand Circle reefs, about 15 feet deep, where I found sunk treasures to discover. Near the Three Bag Reef Wreck, I discovered traces of nautical history at around 40 feet deep.
Each moment was filled with wonder as nature revealed its secret stories beneath the waves, making this a thrilling snorkeling destination.
3. Looe Key Reef
My experience at Looe Key Reef was amazing. This secret spot off Big Pine Key in the Florida Keys is perfect for snorkeling. The water is clear, and the depth ranges from 7 to 30 feet, making it great for both beginners and experienced snorkelers.
I saw 150 types of fish, like bright yellowtail and playful parrotfish, which made every moment feel like a beautiful painting. The excitement continued with moray eels glancing from rocks and barracuda swimming by. The area is also home to larger sea creatures, including sharks, which adds to the thrill for adventurers.
These experiences not only get your heart racing but also help you appreciate the rich aquatic life below the surface, making every visit unforgettable.
4. Delta Shoal

Delta Shoal is a secret spot away from busy tourist areas, perfect for those who want peace and adventure. During my visit, I discovered it is an excellent place for snorkeling. The clear waters show a attracting underwater world full of life. With depths between 6 and 25 feet, snorkelers of all skill levels can discover colorful corals and interesting marine creatures.
What makes Delta Shoal special is the chance to find shipwrecks in the water, adding mystery and excitement to each dive. Unlike popular spots filled with tourists, Delta Shoal feels untouched, enhancing
the experience.
The quiet surroundings let you enjoy beautiful ocean views and moments of solitude, which is rare in today travel scene. If you want a unique underwater adventure away from the crowds, this could be your next favorite getaway.
5. Ivory Shipwreck
The history of the Ivory Shipwreck near Marathon, Florida, is as fascinating as exploring its underwater remains. When I dove about 15 feet down, I saw colorful coral and aquatic life mixed with pieces of this 1853 slave ship. Each dive uncovers not just old artifacts but also a powerful story.
This site serves as a resting place for lost souls and an underwater museum for history lovers like me. I was amazed by how nature has transformed this area, turning decay into beauty. Bright fish swim around rusted chains and broken wood, creating a stunning scene.
For those interested in history and snorkeling, Marathon is the perfect place to visit this shipwreck. Its not just an adventure its a chance to connect with both lively sea life and the serious echoes of our past.
Places to Snorkel Near Marathon, Florida From the Shore

6. Bahia Honda State Park
Bahia Honda State Park, located in the Florida Keys, is a beautiful place waiting to be explored. The park features several beaches, each offering a unique experience. Among them, Calusa Beach and Sand Spur Beach are popular for snorkeling. Their clear waters are full of colorful aquatic life, making them great spots for beginners.
Bahia Honda is special not only for its beauty but also for the calm feeling it gives visitors. As you walk along the sandy paths and swim in the peaceful waters, you can enjoy special moments, like finding a unique shell or watching dolphins play.
Each sunset fills the sky with charming colors, showing why Bahia Honda State Park is a must visit destination in Florida. Its perfect for both adventure lovers and those seeking relaxation.
7. Sombrero Beach
Sombrero Beach, located in the Florida Keys, is a great spot for visitors looking for a relaxing getaway close to town. If you are not ready to discover Sombrero Reef, this beach offers soft sand and gentle waves. You can relax under palm trees and enjoy beautiful views of the blue water, making it perfect for families and casual beachgoers.
While snorkeling here is not as thrilling as diving at Sombrero Reef, you can still enjoy nature along the shore. Bring your mask and snorkel to explore the shallow areas filled with marine life. You can also have picnics, build sandcastles, or take peaceful walks at sunset when the sky lights up with colors.
Sombrero Beach is one of Florida best clear water beaches, combining relaxation and adventure for all visitors.
8. Horseshoe Beach
Horseshoe Beach is a secret place for both adventurers and sunbathers. Located across the beach, it features beautiful turquoise waters and soft, powdery sand that feels like walking on clouds. When I visited, I noticed the special things about this place shining beneath the surface. The marine life just off the shore makes it a great spot for snorkeling. With a snorkel mask, I felt like I entered a new world filled with colorful fish and coral reefs.
What makes Horseshoe Beach unique is its stunning beauty and calm waters, perfect for beginners. Watching delicate sea creatures in their natural habitat added to the magic, each dive revealed new stories beneath the waves.
For anyone wanting to escape into nature while enjoying peaceful moments by the sea, Horseshoe Beach offers a memorable experience that stays with you long after you leave.
9. Cannon Beach in Pennekamp State Park

Cannon Beach in Pennekamp State Park is more than just a beautiful sandy area, its a gateway to sea life and peaceful coastal views. Snorkeling here is a fantastic experience, perfect for families and beginners who want to discover the underwater world close to shore. The gentle waves make it easy to swim with colorful fish among coral, turning every swim into an adventure.
What makes Cannon Beach special is its family friendly vibe and easy snorkeling spots. Whether you are learning to use a snorkel mask for the first time or introducing kids to this exciting underwater world, this cove offers both safety and fun.
10. Coco Plum Beach
Coco Plum Beach is a calm getaway famous for its beauty. The soft sand and clear blue water create a peaceful vibe, helping visitors relax and escape daily life. This secret spot is great for snorkeling, with colorful fish and coral reefs.
Both new and experienced snorkelers can enjoy the warm Caribbean waters. Every dive reveals a beautiful underwater world. Travelers can find quiet moments to reflect on life simple joys while enjoying the stunning views at Coco Plum Beach.
What to Expect on a Guided Snorkeling Tour
A guided snorkeling tour takes you into the ocean to discover its secrets with the help of an expert. As you dive underwater, your guide will keep you safe and share stories about local wildlife and ecosystems. Imagine swimming among colorful coral reefs filled with fish and swaying anemones, each moment teaches you about marine life.
These tours often visit secret spots away from crowded beaches. Besides just watching, guides explain conservation efforts and durable practices, inspiring you to help protect the ocean. You will have hands on experiences, like learning to identify different species and understanding their behaviors. This makes snorkeling more than just a fun activity, it creates a strong connection with nature and its preservation.
Enjoy the excitement of exploring not only what is under the waves but also how we can safeguard this amazing environment for future generations.
Things to Bring On Your Snorkeling Tour
Snorkeling Gear: Many tour companies provide gear, but its a good idea to bring your own mask and snorkel for a better fit. A well fitting mask stops leaks and improves visibility, making your underwater experience more fun.
Rash Guard or Swim Shirt: Protect your skin from the sun while swimming. A lightweight rash guard shields you from UV rays and keeps you warm in cooler waters, perfect for longer snorkeling trips.
Waterproof Bag: Keep your belongings dry. A waterproof bag safely stores valuables like cameras and phones while you explore the underwater world.
Reef Safe Sunscreen: Be mindful of the environment. Use reef safe sunscreen to protect your skin and coral reefs, ensuring future generations can enjoy these beautiful underwater areas.
Underwater Camera or GoPro: Capture memories while swimming with fish. An underwater camera helps you document amazing marine life that you will remember long after your trip.
Snacks and Hydration Supplies: Stay energized while snorkeling. Pack light snacks like nuts or energy bars and bring a sturdy water bottle to stay hydrated, especially in hot climates.
Comfortable Footwear: Wear water shoes or comfy sandals to protect your feet on rocky beaches or slippery surfaces before entering the water. This simple addition keeps you safe and stylish.
Best Time to Go Snorkeling in Marathon Florida
Snorkeling in Marathon, Florida, is best in the spring. From March to June, the weather is comfortable, making it great for both beginners and experienced snorkelers. You can avoid the high humidity of summer, and there is usually less rain. Most snowbirds leave by early April, so the waters are calmer and less crowded, perfect for those who want peace and attracting marine life.
While snorkeling is great from April to October, December has its own appeal. Many visitors come during the holiday season to escape winter, enjoying the tropical atmosphere with festive decorations. The cooler ocean temperatures are refreshing but not too cold, and the clear water sparkles in the sun.
Each visit offers a chance to see colorful fish swimming among coral reefs or sea turtles gliding by, making it a magical experience that keeps bringing me back.
FAQ
Is There Good Snorkeling in Marathon?
Marathon, Florida, is a great place for snorkeling, especially at Sombrero Reef. This protected area is home to colorful coral and many marine animals, like tropical fish and sea turtles. You can reach it by boat.
Nearby, Bahia Honda State Park has shallow waters full of marine life. Local dive shops offer guided tours for all skill levels, so everyone can explore the underwater beauty.
Overall, Marathon highlights the natural wonders of the Florida Keys, making it an excellent spot for snorkeling.
Where is the Best Beach to Snorkel in Marathon?
Marathon, Florida Keys, has great snorkeling at Sombrero Beach. The clear waters and variety of marine life attract both beginners and experienced snorkelers. They can explore shallow reefs with colorful fish, sea turtles, and stingrays.
Sombrero Reef is another excellent choice, reachable by boat or kayak. It is part of the Florida Keys National Marine Sanctuary and has beautiful coral formations and abundant wildlife.