Athens isn’t just about ancient ruins and bustling markets—it also offers some surprisingly good snorkeling opportunities. The city’s proximity to the sea means you can find crystal-clear waters, secluded bays, and even underwater archaeological sites without venturing too far. We especially like the private cruises that combine history and sea adventure, like the Private Cruise to Poseidon Temple at Sounio Cape with Snorkeling and Swimming which offers a rich blend of ancient history and ocean fun. Whether you are a beginner or an experienced snorkeler, Athens’s coastal waters have something to offer, from guided day trips to exclusive private charters.
Many tours focus on exploring bays, beaches, and shipwrecks, giving you a chance to see marine life and underwater ruins, all with professional guidance. If you’re after a quick half-day adventure, you can’t go wrong with boat trips from Nea Makri or the Athens Riviera. For a more immersive experience, the private cruises provide personalized attention and access to less crowded spots. Keep reading for detailed insights into each option.
1. Snorkeling Boat Excursions in Nea Makri, Athens
At number 1, this Snorkeling Boat Excursion in Nea Makri is a favorite for its combination of convenience, comfort, and location. It’s a half-day trip, roughly 4.5 hours long, with a private boat taking you to some of the most scenic bays around Nea Makri. The tour includes visits to Dipsa Island, Marathon Cape, and Schinias Bay, all known for their crystal-clear waters.
What sets this experience apart are the snorkel gear, snacks, drinks, and bottled water, all included in the €92.89 price. The tour’s reviews highlight how caring and informative the guides are, with visitors noting that Demitrous is an especially patient and skilled instructor. It’s perfect if you want to explore Greece’s coastal waters without the hassle of organizing transportation or gear yourself. The hotel pickup and drop-off make it especially convenient for travelers short on time.
Bottom line: This tour offers great value for families or anyone new to snorkeling, thanks to its inclusive setup, friendly guides, and beautiful, secluded beaches.
2. Athens: Marathon Cape and Bay of Schinias Snorkeling Trip
Coming in at number 2, this Marathon Cape and Schinias Bay snorkeling trip combines the thrill of a speedboat ride with visits to two prime snorkeling spots. It lasts about 4.5 hours and takes you around scenic Marathon Cape, with a support crew including a knowledgeable instructor.
The tour includes stops at Schinias National Park, a protected natural area with pristine beaches and a vibrant underwater environment. You’ll swim in crystal waters teeming with marine life and relax on the golden sands of Schinias Bay, which is one of Greece’s most beautiful beaches. The reviews praise Dimitri’s care and French-speaking commentary, making it ideal for travelers wanting a guided experience.
The highlight: the chance to learn about local marine life while actively swimming in two unique spots. The tour is well-suited for those comfortable with boats and looking to combine sightseeing with underwater exploration.
Bottom line: Perfect for active travelers who want to combine scenic sailing with good snorkeling, especially if you appreciate learning about marine ecosystems.
3. Private Cruise to Poseidon Temple at Sounio Cape with Snorkeling and Swimming
Number 3 on the list is a private, full-day cruise that takes you to the iconic Poseidon Temple at Sounio Cape. For up to 8 people, the Private Cruise to Poseidon Temple offers a personalized experience packed with both history and sea adventure.
The tour includes a visit to the ancient temple, which provides stunning views over the Aegean, as well as stops at Arsida, a small uninhabited island with excellent snorkeling, and Vrachos Pothito, a beautiful site known for clear waters. The snorkeling gear and informative guides make this a top choice for history buffs and ocean lovers alike. Guests praise the flexibility and the attention to detail, with one reviewer calling the captain “fantastic” and the experience “a great day.”
The tour emphasizes learning about the ancient site while also enjoying swimming and snorkeling in less crowded areas. It’s best for those wanting a relaxed, all-in-one trip with personalized service and stunning views.
Bottom line: This private option is ideal if you value exclusivity, history, and flexible scheduling—perfect for small groups or couples.
4. Snorkeling and swimming tour to the Poseidon’s temple at Sounio cape
Number 4 is a coastal adventure that combines snorkeling, swimming, and sightseeing at Cape Sounion. It’s a 4-5 hour tour with a small group, capped at just eight people, ensuring a more intimate experience. You visit Vouliagmeni Lake, Legrena Beach with its WWII shipwreck, and finally the Poseidon Temple, where you get panoramic views of the Aegean.
The focus on swimming and snorkeling in spots like the “Blue Well” and Legrena’s beaches provides different underwater environments, with the ability to explore underwater rock formations and marine life. The admission is at your own expense for Vouliagmeni Lake, giving flexibility. Guests highlight the beautiful scenery and top-notch equipment as major pluses.
This tour appeals to travelers seeking a mix of beach time, historical scenery, and water activities, with the convenience of hassle-free transfers.
Bottom line: A well-rounded option for those who want to combine sightseeing with active swimming and snorkeling.
5. Snorkeling Fun Adventure in Athenian Riviera
Number 5 offers a short but sweet snorkeling trip perfect for beginners or those with limited time. The Snorkeling Fun Adventure lasts only about 3 hours but covers a beautiful coastline on the Athenian Riviera. It includes a private transfer from Athens and all snorkeling gear needed, making it super easy to enjoy underwater for the first time or take a quick escape from the city.
The guide is praised for being engaging and professional, and the trip is flexible enough for all experience levels. An optional stop at a local restaurant adds a nice touch for a relaxed day out. The reviews mention the well-organized logistics and high-quality equipment.
Ideal for travelers who want a stress-free, guided introduction to snorkeling, especially if you’re new or short on time.
Bottom line: This is a practical choice for beginners or anyone wanting a quick, guided coastal adventure.
6. Athens Private Cruise Snorkeling Marathon Nea Makri Schinias
Number 6, a private high-performance rib boat cruise, offers an exclusive, personalized experience exploring Nea Makri, Marathon, and Schinias. The Private Cruise to Marathon, Nea Makri, Schinias lasts 2.5 hours but covers multiple spots, including snorkeling in protected waters and beach visits.
Guests rave about the delicious snacks, soft drinks, and the opportunity to take underwater photos with a GoPro or aerial shots with a drone. The private boat allows for flexibility and comfort, with a focus on both adventure and relaxation. The reviews mention how Christos and the crew made the trip memorable and relaxing, with comments like, “We enjoyed the casual experience and being able to snorkel and relax on the boat.”
Suitable for small groups or families looking for a bespoke, high-end experience that combines seclusion with marine exploration.
Bottom line: Best suited for those wanting privacy, comfort, and a tailored itinerary.
7. Private Cruise & Snorkeling Nea Makri, Marathon, Schinias, Rafina
Number 7 is a private, half-day cruise with a focus on relaxed exploration. This Private Cruise & Snorkeling takes you along the coastline near Nea Makri, Marathon, Schinias, and Rafina. The tour lasts about 2.5 hours, with opportunities to snorkel, swim, and enjoy snacks onboard.
Guests mention the friendly guide Chris, who made everyone feel welcome. The trip is flexible, allowing for spontaneous swims or photo stops. It’s a good choice for families or small groups wanting a personalized experience without a rigid schedule.
Bottom line: Small-group travelers seeking a relaxed, customizable trip with plenty of ocean time will find this very appealing.
8. Ancient Corinth, Mycenae & snorkelling in sunken city private
Number 8 offers a full-day private tour that combines ancient history with underwater archaeology. The Ancient Corinth, Mycenae & Snorkelling in Sunken City is a 12-hour trip, perfect for history buffs who also want to explore underwater ruins. It includes visits to the ancient sites of Corinth, Nafplio, and Epidaurus, along with snorkeling among the sunken ruins of Epidaurus.
The tour is full of customizable stops and personalized attention, with guests praising the knowledgeable guide. “Swim in the underground ruins of Epidaurus,” one review notes, which makes it a rare chance to combine ancient sites with marine exploration.
This experience is ideal for travelers with a keen interest in archaeology and history, who don’t mind a long day on the road.
Bottom line: For history enthusiasts wanting a comprehensive private day trip with snorkeling at a sunken city, this tour delivers.
9. Private Cruise & Snorkeling Nea Makri, Petalioi, Marmari Full Day
Number 9 focuses on off-the-beaten-path exploration with a full-day private cruise to the Petalioi Islands and Marmari. The Full Day Private Cruise allows you to snorkel in untouched waters, relax on pristine beaches, and enjoy local snacks onboard.
The crew’s expertise ensures a safe, flexible experience tailored to your pace. Reviewers mention the unparalleled access to remote islands and beautiful waters where marine life is abundant. The tour is well-suited for travelers seeking a custom, luxurious day on the water away from crowds.
Bottom line: Perfect for those looking for exclusivity and adventure in untouched areas, especially families or small groups with a taste for exploration.
10. Athens: Private Cruise with Snorkeling and Swimming
Number 10 offers a personalized five- to six-hour cruise along the Athens coast. This Private Cruise with Snorkeling is designed for those who want flexibility and privacy, exploring uninhabited islands and less known caves. It includes snorkeling gear, snacks, and round-trip transport.
Guests appreciate the host’s attention—George is known for making the experience memorable, with options to explore caves, swim at quiet beaches, or just relax on the boat. The reviews highlight the friendly atmosphere and customizable itinerary suited for both beginners and seasoned snorkelers.
This tour fits travelers who want a private, flexible experience and enjoy mixing relaxation with underwater exploration.
Bottom line: Ideal for couples or small groups seeking an exclusive, adaptable day on the water.
11. Athens Private Snorkeling and Swimming Cruise with pick up
Number 11 is a half-day private trip with a focus on individualized experience. The Private Snorkeling and Swimming Cruise includes transport from your hotel or port, and trips around bays or caves in the Saronic Gulf.
Guests enjoy snorkeling gear, snacks, and personalized service. Reviewers mention the friendly guides and how the flexibility allows for spontaneous swims or underwater photography. It’s especially good for those who prefer a private, curated experience with fewer people around.
Bottom line: Perfect for travelers who want a private, relaxed trip with all essentials covered.
12. Private RIB Boat Cruise & Snorkeling Lavrio Kithnos Cyclades
Closing our list at number 12 is a luxury, full-day private cruise exploring Kithnos and the Cyclades. This Private RIB Boat Cruise takes up to 8 people on an eco-friendly adventure with stops at Kolona Beach and Loutra, known for their spectacular waters and thermal springs.
Guests rave about the unparalleled access to remote beaches, snorkeling in clear waters, and therapeutic hot springs. The trip includes snorkeling gear, snacks, and a focus on eco-responsibility, making it a unique blend of adventure and sustainable travel. The review highlights the personalized experience and the chance to explore less crowded, untouched spots.
Bottom line: Best suited for experienced snorkelers or groups seeking a luxurious, eco-conscious day exploring the Cyclades.
$2,268.95 per group (up to 8)
How to Choose the Best Snorkeling Experience in Athens
When selecting your perfect snorkeling tour, consider your budget, time available, and whether you prefer a guided group trip or private experience. For beginners or short visits, the Snorkeling Boat Excursions in Nea Makri offers excellent value with included gear and snacks. If you want a personalized, luxury adventure, private options like the Poseidon Temple cruise or the Kithnos Cyclades cruise are ideal.
Think about what kind of scenery appeals most—sea caves, shipwrecks, or historic ruins? For a blend of history and underwater exploration, the private Ancient Corinth, Mycenae & Snorkelling in Sunken City tour stands out. Want to combine marine life with protected natural parks? The Marathon Cape and Schinias Bay trip covers these bases well.
For ease and convenience, look for tours with hotel pickup and all-inclusive gear. Booking early is advisable, especially for private cruises and high-demand tours, to secure your preferred date.
In summary, Athens offers a surprising variety of snorkeling experiences that cater to every interest and comfort level. Whether you want a quick half-day of fun or an exclusive private adventure, there’s something waiting in the waters just outside the city. Our top picks include the Snorkeling Boat Excursions in Nea Makri for great value, the private cruises for personalized service, and the historical underwater sites for those who like history as much as marine life. Dive in early, plan ahead, and enjoy Athens from a whole new perspective beneath the waves.