Santorini isn’t just famous for its stunning sunsets and iconic caldera views; it’s also a fantastic place to snorkel and explore underwater. Its clear, warm waters and volcanic landscapes create excellent conditions for marine life and underwater adventures. We especially liked the Santorini Fishing Private Cruise boat tour for its personalized approach—sailing around Nea Kameni and getting a chance to catch your own fish makes it a memorable experience. For a more social, lively trip, the Santorini Adventurous Catamaran Experience with Snorkeling offers iconic beaches, hot springs, and free-flow wine, perfect for those who want a mix of scenery and fun.
Many of the tours on our list focus on secluded spots and volcanic features, giving you a chance to snorkel in warm springs, explore caves, and enjoy calm waters away from crowds. Whether you prefer private, intimate experiences or small-group adventures, Santorini offers something for every water lover.
Here’s a quick overview of the types of tours included below: from private boat cruises with options for fishing and BBQs, to lively catamaran trips with snorkeling and sunset views, and even small-group kayaking trips exploring caves and cliffs. Each has its own charm and focus—click the links for details.
1. Santorini Fishing Private Cruise boat tour – BBQ, Snorkeling
Taking the top spot is this private fishing cruise that combines fishing, snorkeling, and a relaxed day on the water. For about $492 per person, you get a 5-hour trip around Santorini’s coast with your own captain, who personalizes the day based on what you want. No need to bring gear—the tour supplies fishing and snorkeling equipment—so you can focus on enjoying the Aegean Sea and the volcanic scenery.
What makes this tour stand out is its exclusivity. You’ll sail around Nea Kameni, the island’s volcanic heart, and avoid the crowds. The crew also helps you try to land a big catch, offering a real sense of adventure. Plus, there are snacks and drinks onboard, so you can relax while soaking up the views. Past travelers say it’s more than just fishing—it’s a personalized island experience, with guides sharing local geology and history.
Bottom line: If you’re craving privacy, personalized service, and a chance to combine fishing with snorkeling, this is a top pick. It’s a bit pricey but offers a truly authentic day on Santorini’s waters.
2. Santorini Adventurous Catamaran Experience with Snorkeling
For about $111.64 per person, this catamaran tour is a fantastic way to see Santorini from the water. It lasts roughly 5 hours and accommodates no more than 16 guests, making it a perfect small-group adventure. You’ll sail along the caldera, passing famous sites like the Red and White beaches, and enjoy swimming in the volcanic hot springs—an experience many travelers say is unforgettable.
This tour offers a balance of sightseeing, snorkeling, and relaxing with free-flow white wine and soft drinks, which is a nice touch. The stops include White Beach—accessible only by boat—and the iconic Venitian Lighthouse, which adds a historic charm to the trip. Snorkeling gear is provided, and the tour is flexible enough to choose between a daytime or sunset cruise, depending on your mood.
Reviewers love the friendly crew and the spectacular scenery. One said, “The sunset cruise was absolutely amazing,” highlighting how the trip combines incredible views with fun water activities.
Bottom line: This tour is ideal for travelers seeking a social, scenic day with great snorkeling, good food, and a relaxed vibe. It’s excellent value considering the small-group setting and inclusions.
3. Small-Group Santorini Sea Caves Kayak Trip with Snorkeling & Picnic
If you’re looking for an active, intimate experience, this kayak trip is perfect. With a maximum of eight participants, it’s a 7-hour journey that takes you along the Akrotiri coast, exploring sea caves, cliffs, and volcanic formations. The guide provides all gear—snorkeling equipment, dry bags, towels—so you just need to bring your swimwear.
What makes this tour unique is its combination of adventure and personal touch. You paddle past Black Mountain and Indian Rock, jump from white cliffs at White Beach, and snorkel in the volcanic waters. You’ll also receive high-resolution digital photos of your trip, so you can relive your day. The reviews consistently praise the guide’s attention to detail, with one traveler calling it “so fun and just enough of a challenge.”
The included picnic, featuring Greek salad and spanakopita, adds a local flavor to the trip. It’s a great fit for active travelers who want to see Santorini from the water in a more personal, less crowded setting.
Bottom line: This tour offers a mix of paddling, snorkeling, and cultural charm, suited for those who enjoy physical activity and small-group camaraderie.
4. 3-Hour Private Sailing and Snorkeling Adventure from Fira
This private 3-hour sailing trip is focused on a relaxed, intimate experience, perfect for couples or small groups. For around $573.20 for up to four people, you’ll sail along Santorini’s stunning coastline, stopping for snorkeling at Nea Kameni—the volcanic island most visitors overlook—and Thirassia.
The highlight is the personalized experience—you choose where to go, and your captain shares insights into the island’s volcanic history. Snorkeling gear is provided, and the boat is equipped with music and refreshments. Reviewers mention the “wonderful experience” and “knowledgeable host,” making this a standout for those who value privacy and flexibility.
The main advantage is the ability to customize your time on the water, with comfortable amenities for a short, focused trip. It’s ideal if you’re short on time but want a private, tailored adventure.
Bottom line: Perfect for a romantic or family outing, this tour delivers a personal touch and exclusive access to Santorini’s volcanic waters in just a few hours.
5. Serenity Kayak : Sea Caves Kayak Trip with Snorkeling & Picnic
Another option for small-group lovers is the Serenity kayak tour. It’s a 7-hour trip for up to eight people, exploring Santorini’s southern shores. Highlights include sea caves, jumping from cliffs, and snorkeling around volcanic formations. The tour also includes a organic picnic, making it a well-rounded day of activity and relaxation.
The guide’s attention to detail and personalized service shine through in reviews—one calls it “magic” and “perfect,” praising the organization and guide’s friendliness. Snorkeling gear, towels, dry bags, and photos are all included, so you’re well cared for during your adventure.
This tour is fantastic for experienced kayakers or anyone wanting an active, close-up view of the island’s caves, cliffs, and beaches without the crowds.
Bottom line: Best suited for active travelers who enjoy exploring caves and snorkeling in a small, friendly group.
How to Choose the Right Snorkeling Experience in Santorini
When selecting your perfect tour, consider your budget, preferred length of trip, and whether you want a private or group experience. For a luxurious, private day, the Santorini Fishing Private Cruise offers exclusivity. If you’re after a lively social atmosphere, the catamaran trip provides scenic beaches and wine. Active travelers might prefer the kayak tours, which combine paddling, snorkeling, and caves.
Think about your fitness level and interests—do you want a quick, private outing, or a longer, adventure-filled day? Booking early is advisable, especially in peak summer months, to secure your spot on these popular tours.
Final Thoughts
Santorini’s waters are a treasure trove of snorkeling, caves, and volcanic scenery. If you want a private, personalized experience, the private cruises deliver intimacy and flexibility. For those seeking a lively atmosphere with stunning views, the catamaran trip offers excellent value and comfort. Active travelers who love paddling and caves will find the kayak trips perfect.
Whatever your style, Santorini’s waters promise memorable moments—so book early, pack your swim gear, and prepare to enjoy the island from a whole new perspective.
