Keri’s stunning coastline, clear waters, and dramatic caves make it a natural choice for memorable boat tours and experiences. Whether you’re keen on spotting turtles, exploring hidden caves, or enjoying a sunset with a glass of wine, Keri offers options that suit every traveler. We particularly enjoy private boat trips because they combine flexibility, intimacy, and personalized service—perfect for a romantic getaway or small group adventure. For example, the Zante Private Boat: Marathonisi, Keri Caves, Mizitres provides a tailored experience with a local skipper, taking you straight to the best spots for swimming and snorkeling.
But Keri’s tours aren’t just about boat rides; they also include scenic viewpoints, olive oil tastings, and even sunset cruises. Our favorites balance fun and authenticity, making your time on the water both exciting and relaxing. Below, we’ve laid out each top-rated tour, so you can decide which one fits your style and schedule.
1. Zante Private Boat: Marathonisi, Keri Caves, Mizitres (max5)
At number 1, this private 3-hour boat tour is a standout for its intimate experience and flexible itinerary. With your own skipper, you’ll visit Marathonisi Island, known for its turtle population, and explore the Keri Blue Caves with their striking shades of blue. The tour also includes swimming at Mizithres Rocks, where the water is so clear it’s almost surreal. The small group size (up to five people) ensures personalized attention, and the reviews praise Justin’s expertise and friendly approach. Guests especially love snorkeling among turtles and exploring caves inaccessible to larger boats, making this a top pick for couples and small groups.
This tour combines natural beauty with a sense of adventure, all while offering good value for the personalized experience. If you want a seamless, private outing that hits all the highlights, this is a fantastic choice.
Bottom Line: Perfect for those seeking a flexible, private, and immersive boat trip with excellent snorkeling and cave exploration.
2. Half-Day Tour to Turtle Island – Keri Caves
For a well-rounded 6-hour adventure that combines scenic viewpoints, a cultural stop, and a boat cruise, this tour hits the mark. Starting from Planos, it includes a visit to the Mizithres View Point for sweeping vistas, then a guided tour of the Aristeon Olive Oil Press, where you can taste fresh extra virgin olive oil—an authentic Greek experience. Afterward, the boat cruise lasts about three hours, taking you to Turtle Island and the Keri Caves for swimming and snorkeling. The tour is highly rated for its smooth organization and friendly driver, making it ideal for travelers who want a bit of everything without full-day commitment.
Guests praise the combination of land and sea experiences, with one reviewer noting, “The boat trip and tour in the van were very nice and perfectly arranged.” It’s particularly suited for travelers looking for a relaxed but comprehensive day, blending nature, culture, and wildlife viewing.
Bottom Line: A balanced option for those wanting a mix of scenic viewpoints, olive oil tasting, and a memorable boat cruise.
3. Zakynthos Gems: Eros Cave, Keri Caves, Mizithres Rocks
Number 3 on our list is a 3-hour private boat cruise showcasing Zakynthos’ most stunning hidden spots. The tour includes visits to the Eros Cave, famous for its glowing blue waters, and the Mizithres Rocks, with their unique formations. The highlight is swimming in Pischines’ crystal pools and experiencing the vibrant marine life. The small group size and guided approach ensure you get up close and personal with the island’s natural beauty.
Reviews highlight the trip’s value, with travelers raving about the “magnificent natural spot” and the opportunity to relax in turquoise waters. This tour is best suited for those who want a quick yet comprehensive exploration of Zakynthos’ best-kept secrets, with plenty of swimming and photo opportunities.
Bottom Line: Ideal for travelers who want a short, scenic escape into Zakynthos’ most stunning caves and pools.
4. Zante Private Boat: Keri Caves, Mizithres, Eros Cave (max5)
This 4-hour private boat tour offers a deep dive into Zakynthos’ best hidden gems. With your own skipper, explore the Keri Caves, Mizithres Rocks, and the Cave of Love, which is perfect for a romantic swim. The tour emphasizes exclusive access to less crowded spots, with the option for turtle spotting at the National Marine Park. Guests appreciate the boat’s flexibility, allowing for personalized stops and snorkeling in crystal-clear waters.
The reviews laud the experience as “much better than larger boat trips,” especially noting the friendly skipper and the chance to explore caves inaccessible to bigger vessels. This is best suited for small groups or couples seeking privacy and a tailored itinerary.
Bottom Line: Excellent for those wanting a private, customizable boat trip with a focus on serenity and exclusive views.
5. Zakynthos: Sunset Cruise to Mizithres and Agalas Cave
Number 5 is a 4-hour sunset cruise that turns your day into a magical evening. Starting from the coast, this tour takes you to Marathonisi, where you might spot turtles, before cruising to the Mizithres Rocks just as the sun begins to set. The highlight is the chance to enjoy a panoramic view of Zakynthos’ coast bathed in the warm glow of sunset, all while swimming and relaxing onboard. It’s a romantic option, especially for couples eager to combine scenic beauty with a tranquil atmosphere.
Reviews mention the “incredible sunset” and “comfortable boat experience,” making it a popular choice for special occasions. It’s perfect if you want to combine wildlife spotting with a memorable evening.
Bottom Line: Best suited for romantics and sunset lovers wanting a peaceful, scenic cruise.
6. Zakynthos Private Sunset Boat: Keri Caves & Mizithres (max5)
This 2-hour private sunset cruise is an intimate way to see Zakynthos’ iconic Keri Caves and Mizithres Rocks. Departing from Keri Beach, a friendly skipper guides you through the caves, with plenty of time for a swim and to admire the changing shades of blue as the sun dips. Guests rave about the “breathtaking views” and the personalized experience, with one reviewer noting how the skipper respects turtle zones and ensures a peaceful trip.
It’s especially ideal for couples or small groups who want a short, relaxed experience with a focus on scenery and sunset views.
Bottom Line: Great for a quick, romantic outing with stunning vistas and a chance to beat larger crowds.
7. Zakynthos: Private Speedboat Tour to the Shipwreck and Swim
Number 7 offers a 4.5-hour private speedboat adventure. You’ll visit the legendary Shipwreck Beach, known for its dramatic setting, and cruise through the Blue Caves for snorkeling and swimming. The tour also explores Porto Stenitis and Porto Limionas, providing a mix of famous sights and lesser-known spots. The speedboat offers an adrenaline rush that larger cruises can’t match, making it ideal for those seeking a bit of thrill along with stunning scenery.
Guests describe the experience as “feeling the thrill of a private speedboat,” and the flexibility allows for customized stops. This tour is perfect for active travelers looking to explore more in less time.
Bottom Line: Excellent for thrill-seekers and those who want a fast-paced, private exploration of Zakynthos’ highlights.
8. Zakynthos Main Port: Full-Day Cruise by Unique Pirate Ship
This 8-hour pirate-themed cruise offers a full day on the water, with stops for swimming and sightseeing. The pirate ship vibe adds a playful touch, and destinations include the Blue Caves, Smuggler’s Wreck, and more. It’s a lively, social experience with multiple swim stops and onboard entertainment, making it suitable for families or groups wanting a fun, carefree day.
While the reviews mention the trip’s popularity, some note the larger crowd size. Still, it provides a rundown of Zakynthos’ most famous sights with plenty of time for relaxing in the water.
Bottom Line: Ideal for travelers seeking a lively, all-day adventure with a bit of a pirate twist.
9. Zakynthos: Daily cruise around the island
Number 9 is a 7-hour VIP cruise that covers the Navagio Shipwreck, Kabi Beach, and Keri Caves. It’s an affordable way to see many highlights in a single day, but reviews note it’s not the most elaborate experience. Still, if you’re after a straightforward overview and don’t mind a larger group, this cruise offers good value for a full day of sightseeing.
It’s best suited for budget-conscious travelers or those with a tight schedule wanting a quick, guided overview of Zakynthos’ top spots.
Bottom Line: Good for budget travelers who want a full-day tour and don’t mind larger groups.
10. Glass Boat Cruises to Spot Turtles
This 3-hour glass-bottom boat tour is perfect for wildlife lovers. The vessel is designed to showcase Zakynthos’ underwater life, particularly the Caretta Caretta turtles. The tour includes a scenic cruise with snorkeling and plenty of opportunities to see turtles close-up, especially around Agios Sostis. The reviews highlight the captain’s experience and the “wonderful experience” of seeing turtles swimming nearby.
Ideal for families or anyone interested in marine life, this tour combines education with fun in a comfortable boat that maximizes viewing opportunities.
Bottom Line: A top choice for turtle enthusiasts and those wanting an informative, relaxing boat ride.
11. Luxury Yacht | Zakynthos |39ft Cranchi | Private for 9 people
Number 11 offers a luxury yacht experience that can be tailored to your interests. This private 39ft yacht accommodates up to nine people, with options for swimming, snorkeling, and exploring remote islets. Guests love the flexibility of choosing their itinerary, plus enjoying a comfortable and elegant environment. Some tours include lunch or dinner onboard, making it a perfect for special occasions or celebrating.
Reviews mention the high-end experience and the chance to see Zakynthos from a different perspective. This tour suits travelers looking for a more upscale, personalized adventure with a focus on comfort and exclusivity.
Bottom Line: Perfect for celebrating a special occasion or seeking a luxurious, private day on the water.
12. Unique Cruise to Shipwreck Beach and Local Blue Caves
This 5-hour tour from Laganas offers a detailed exploration of Shipwreck Beach, the Blue Caves, and the Poseidon Face rock formation. It includes multiple swim stops and the chance to see dolphins, making it lively and full of surprises. Travelers who love a busy schedule with lots of sights will appreciate the variety packed into this trip.
Reviews mention how the boat visits lesser-known attractions like Porto Stenitis Bay and Korakonisi, so you get a good mix of famous and obscure spots. It’s suitable for those who want an active, photo-rich day.
Bottom Line: Good for travelers who want a diverse, full-day adventure with plenty of opportunities to swim, photograph, and enjoy nature.
13. Zakynthos: 24ft Cranchi Private Cruise for 5 People
This half-day private yacht is for up to five people who want a personalized, relaxed cruise. It explores the south coast, with stops at Oasis Beach and the Keri Caves, offering excellent snorkeling and photo opportunities. The flexibility allows you to customize your trip, and it’s perfect for small groups or couples wanting privacy.
Reviewers appreciate the intimate setting and the chance to explore Zakynthos’ waters without the crowds. It’s a good choice for travelers who value privacy and a leisurely pace.
Bottom Line: Ideal for small groups or couples seeking a private, relaxed trip with a focus on comfort and flexibility.
14. Zakynthos: Private Boat Tour – South Coast & Swim Stops
Rounding out the list, this 3-hour private speedboat offers tailored stops along the south coast, including Keri Caves, Myzithres, and Marathonisi. The full control of the itinerary and personalized service make it a great way to see the highlights without racing around with a crowd. The boat options include a premium 7m or a cozy 5.6m speedboat, both perfect for exploring at your own pace.
Travelers love the local skipper’s secret swim spots and the flexibility to enjoy snorkeling and swimming whenever you like. It’s an excellent choice for those who want a custom experience with high comfort.
Bottom Line: Best suited for travelers who want the freedom to craft their perfect day on the water with a small group.
How to Choose the Right Tour in Keri
When selecting your ideal tour, consider your budget, time constraints, and what you want most out of your experience. If privacy and customization are your priority, look at private options like the Zante Private Boat or the Luxury Yacht. For a more relaxed, family-friendly day, the Half-Day Turtle Island Tour offers a mix of cultural and scenic highlights.
If wildlife viewing is your main goal, the Glass Boat Turtles provides excellent chances to see Caretta Caretta turtles up close. Planning around sunset? The Sunset Cruise promises a romantic experience, especially if you’re celebrating something special.
Booking early is advised during peak seasons, as smaller, private tours fill quickly. Always check the availability and consider your fitness level and interests—some tours involve swimming, snorkeling, or walking.
Final Thoughts
Keri’s diverse tour options cater to a wide range of interests. For a private, family-friendly experience, the Zante Private Boat: Marathonisi, Keri Caves, Mizitres stands out with its personalized service. If you’re after a sunset or romantic cruise, the Sunset Cruise to Mizithres won’t disappoint.
For thrill-seekers, the Private Speedboat to Shipwreck Beach offers both excitement and iconic vistas in one go. And if wildlife is your passion, the Glass Bottom Turtle Tour allows close encounters with Zakynthos’ beloved turtles.
Whatever your style, booking early and choosing the right experience will ensure a memorable time exploring the stunning waters and caves of Keri.