Zakynthos: Turtle Spotting and Keri Caves Boat Tour

If you’re planning a trip to Zakynthos and love the idea of a laid-back, nature-focused escape, this Turtle Spotting and Keri Caves Boat Tour could be just what you’re looking for. It’s a compact adventure that promises a good dose of swimming, stunning views, and the chance to see the famous Caretta Caretta turtles in their natural habitat.

What caught our eye about this experience are two things: first, the opportunity to get up close to sea turtles without disturbing them—something that’s rare on busy boat tours. Second, the chance to explore the Keri Caves using a small boat, which lets you access caves larger boats can’t reach. On the downside, the tour lasts only around three hours, so if you’re craving a more immersive experience, you might find it a bit quick.

This tour really suits travelers who want a well-rounded, nature-centered outing about marine life and geological wonders with a relaxed pace. If you’re traveling with friends or even solo, seeking memorable photo ops and a taste of Zakynthos’ unique coastal treasures, it’s a solid pick.

Key Points

• Close Encounter with Turtles: You get a genuine chance to see Caretta Caretta turtles in their natural environment.
• Access to Keri Caves: Smaller boats mean better access—enter caves larger vessels can’t reach.
• Beautiful Swim Stops: Crystal-clear waters at Keri Caves and Turtle Island make for memorable swimming and snorkeling.
• Limited Group Size: With only up to 7 people, expect a more intimate experience.
• All-Inclusive Features: Snorkeling gear, experienced captain, and photo opportunities are included.
• Flexible Booking: Cancel up to 24 hours in advance or reserve now and pay later for more flexibility.

You can check availability for your dates here:

A Closer Look at the Experience

Starting Point and Meet-Up

The adventure begins at Agios Sostis Beach, right in front of a villa with big palm trees and Zantediving Center. The location is straightforward, and the small group size means you won’t be lost in a crowd. Being just a handful of people also means your captain can give more personalized attention, answer questions, and make the trip feel less rushed.

Setting Sail for the Keri Caves

Once aboard your small boat, the first major highlight is gliding into the Keri Caves. These caves are a highlight for many visitors because of their dramatic formations and the way sunlight filters through the water, creating glowing reflections. The fact that you can enter the caves—something larger boats can’t do—makes this part of the tour extra special.

Expect about 35 minutes exploring the caves, with plenty of photo opportunities. We loved the way the captain navigates smoothly through narrow gaps, making it feel like a private tour rather than a commercial one. The water here is incredibly clear, so swimmers and snorkelers can enjoy the vibrant marine life beneath.

Turtle Island (Marathonisi)

Next, the boat heads to Marathonisi, famously called “Turtle Island” because of its shape and its significance as a nesting site for sea turtles. The stop here lasts about 35 minutes, giving you plenty of time for a quick swim, sunbathe, and snapping photos of the island’s unique shape.

Many reviews mention the thrill of seeing turtles in the wild. While it’s not guaranteed you’ll spot one every trip, the chance to see the Caretta Caretta turtles—protected during nesting season—adds a special touch to the tour. One traveler noted, “Getting up close to the turtles without disturbing them was a real highlight.”

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Marine Park and Caves

The tour also includes a stop at the Zakynthos Marine Park, where you can observe marine life. Although not a long stop, it’s an interesting addition that adds educational value to the experience. Some reviews mention observing marine life, which can be quite special if you’re into underwater viewing.

Relaxing and Refreshing

The final part of the tour is a leisurely stop on Turtle Island’s northern beach. Here, you can relax, swim, and enjoy cold drinks from the floating bar—perfect for cooling off after the exploration. Many travelers appreciate the relaxed vibe and the chance to just unwind on the beach.

The Itinerary Breakdown

• Start at Agios Sostis Beach for a quick meet-up.
• Keri Caves: 35-minute exploration, swimming, snorkeling, and photos within the caves.
• Marathonisi (Turtle Island): 35-minute stop for swimming and possibly spotting turtles.
• Zakynthos Marine Park: 30-minute marine life viewing and photos.
• Return to Agios Sostis after a memorable 3-hour trip.

This itinerary balances adventure with relaxation, packed into a manageable timeframe that doesn’t exhaust but still feels satisfying.

What Makes This Tour Stand Out?

Access to the caves is a big plus, especially since the small boat can navigate through passages larger vessels can’t reach. This offers a more intimate and exciting perspective of the Keri Caves’ natural beauty. The chance to see Caretta Caretta turtles in the wild is a rare and treasured part of the experience, especially for nature lovers.

The small group size (max 7 participants) often garners praise for making the trip feel more personal and less rushed—a real plus if you prefer a relaxed pace with enough time to take photos and ask questions.

The crystal-clear waters truly are one of the tour’s greatest assets. Many reviews mention how gorgeous the swimming locations are and how refreshing it is to cool off in such pristine environments.

Practical Considerations and Tips

While the tour is pretty straightforward, a few things are worth keeping in mind. First, it lasts only three hours, which is enough for a taste but not a deep-dive into the area. If you’re craving a longer or more immersive experience, you may want to look for full-day options.

The tour is limited to 7 people, so it’s a great choice if you want a more personalized feel. But this small size also means you should book ahead, especially during peak season.

Be sure to bring sunscreen, a hat, swimwear, towel, camera, snacks, and water—the essentials for comfort and capturing memories. As always, respect marine life: avoid touching turtles or plants, and dispose of litter responsibly.

Who Is This Tour Best For?

This experience is perfect if you’re after a relaxed, nature-focused outing that offers good chances to see wildlife without too much physical exertion. It’s also ideal for travelers who enjoy exploring caves and snorkeling in clear waters.

While it’s not explicitly marketed as family-friendly, families with older children might find it suitable, especially if they’re comfortable in the water. But keep in mind the sea conditions and the fact that it’s a boat trip—those prone to seasickness should consider this carefully.

The Sum Up

This Zakynthos boat tour strikes a pleasing balance between adventure and relaxation. It offers a rare chance to see sea turtles in the wild, explore the spectacular Keri Caves, and enjoy swimming in some of the clearest waters around. With the small group size and knowledgeable captain, it feels personal and well-managed, making it suitable for travelers who value quality over quantity.

If you’re after a short but memorable marine adventure that hits the highlights—caves, turtles, and beautiful scenery—this tour could be a great pick. Be prepared for some stunning views, a few relaxing moments, and the chance to connect with nature in one of Greece’s most beautiful coastal spots.

It’s an experience that’s well worth the price for those who love marine wildlife and scenic coastal exploration.

Frequently Asked Questions

Is this tour suitable for children?
While not explicitly marketed as family-friendly, children comfortable in water and with a sense of adventure could enjoy it. Just keep in mind the boat trip duration and sea conditions.

Do I need to be a strong swimmer?
You don’t need to be a professional swimmer, but since there are swimming stops and snorkeling, basic comfort in the water is helpful.

Can I see turtles on every tour?
Turtles are in their natural habitat, so sightings aren’t guaranteed, but the tour provides good chances, especially during nesting season.

What should I bring?
Bring sunscreen, a hat, swimwear, towel, camera, snacks, and water. The boat provides snorkeling gear, but feel free to bring your own.

How long is the tour?
The entire experience lasts about 3 hours, including stops at caves, Turtle Island, and marine park.

Is there an option to cancel?
Yes, you can cancel up to 24 hours in advance for a full refund, making it flexible if your plans change.

Is this a private tour?
No, it’s a small group tour limited to 7 participants, offering a cozy, personalized experience.

If you’re after a balanced, nature-centered boat trip that offers up-close views of caves and the chance to see turtles in the wild, this Zakynthos tour hits the mark. It’s a laid-back yet exciting way to enjoy some of the island’s marine beauty.

You can check availability for your dates here: