Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124

Discover Zakynthos on a small boat tour to Keri Mizithres and Marathonisi, with stunning caves, turtle sightings, and local cuisine—all in 5.5 hours.
Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi: An Authentic Adventure
Getting a true feel for Zakynthos means exploring its coastlines, caves, and, of course, its famous turtles. This small boat tour, offered by Cretan Holidays, promises an immersive experience that combines breathtaking scenery, wildlife sightings, and a taste of local Greek cuisine—all within a relaxed half-day. What stands out most is the chance to see Caretta-Caretta turtles swimming beside the boat, making it a hit among wildlife lovers and those craving authentic island views.
One of the things we love about this experience is how it balances sightseeing with comfort. With a maximum of just 12 travelers, you’ll enjoy a more intimate vibe, personalized attention from guides, and less time standing in lines or feeling like just another passenger. That said, a potential consideration is the lack of restroom facilities at the port and on the boat—so packing some water and essentials is a good idea. This tour suits those who appreciate natural beauty, small-group intimacy, and local flavors, especially if you’re eager to see the caves and spot turtles in their natural habitat.


Your day starts with a convenient pickup from your accommodation or a nearby meeting point in Laganas. The air-conditioned bus whisks you to Agios Sostis, the departure point for your boat trip. The journey itself is comfortable, setting the tone for a relaxing day. From there, you’ll board a smaller vessel—perfect for navigating through the caves and inlets that larger boats can’t access. Expect to set off around 10:00 am, giving you plenty of daylight for exploring.
The initial highlight is the Keri Caves, which you’ll pass by during a roughly three-hour cruise. These caves are famed for their dramatic formations and have been a popular spot for photographers. The boat gets close enough to experience their grandeur, but not so close as to disturb the delicate ecosystems. Multiple reviewers mention how impressive these caves are—”We had a very nice boat trip to the caves of Keri,” one reviewer shared, emphasizing the scenic beauty and the expert navigation of the captain. The caves are also a perfect spot to snap some photos of the rugged coastline.
Next, the boat cruises around Mizithres Beach, a tiny, picturesque spot with striking rock formations. “Mizithres was also beautiful,” said a reviewer, highlighting its photogenic qualities and tranquil waters. While the boat doesn’t usually stop here for extensive swimming, you’ll enjoy passing by these natural sculptures and the clear, inviting sea. If you’re lucky, you might catch the captain stopping nearby for a quick swim or some snorkeling, which some travelers found to be a delightful bonus.
After about 2.5 hours, your vessel approaches Marathonisi, often called Turtle Island due to the endangered Caretta-Caretta turtles that frequent its waters. The boat pauses here, giving you time to swim, snorkel, or simply admire the island’s pristine beaches. As one reviewer pointed out, “Our boat excursion to Marathonisi was absolutely magical! Known as Turtle Island, this paradise exceeded all our expectations.” The waters are crystal-clear, and the landscape is postcard-perfect with lush greenery and sandy coves.
Throughout the cruise, the guides are attentive—keeping an eye out for turtles. “Keep an eye out for the well-known Caretta-Caretta turtle, which, with some luck, will accompany you on the crossing,” notes the tour description. Several reviewers mention how exciting it was to spot these gentle creatures swimming alongside the boat, often surprisingly close. The experience isn’t just about the scenery but also about having a genuine chance to observe local wildlife in their natural environment.
The tour is well-paced with opportunities to bathe and snorkel in the Ionian Sea. Depending on weather conditions and group preferences, you might find yourself floating in the warm waters, enjoying the tranquility, or exploring undersea life. Just remember, there are no onboard restrooms or snack bars, so bringing your own refreshments is recommended.
The day culminates at a charming tavern near the harbor, where you’ll savor local dishes. Several reviewers rave about the meal, describing it as “delicious” and authentic. The meal typically features Greek staples, giving you a chance to unwind and indulge after a busy morning on the water. The tavern experience adds a layer of local flavor that elevates the overall value of the tour.

Unlike many large boat excursions, this tour caps out at 12 participants, creating a more relaxed, friendly environment. We loved the way this small size encouraged interaction with guides and fellow travelers, making the experience more personal. Many reviews mention how guides like Sabrina and Marie went beyond just pointing out sights—they shared helpful tips and made everyone feel at home.
The genuine possibility of seeing Caretta-Caretta turtles swimming nearby is a highlight. Several guests have commented on how special it is to spot these creatures in the wild, which adds a meaningful touch to the trip. The combination of caves, beaches, and wildlife makes this a well-rounded nature-focused excursion.
From the pickup to the traditional tavern lunch, this tour focuses on giving travelers a taste of real Zakynthos. It’s not just about ticking off sights but enjoying the natural beauty and local hospitality.
At around $107.58 per person, this tour offers a lot for the cost—small group intimacy, wildlife viewing, scenic cruising, and a local meal. For those wanting an all-in-one day trip that balances sightseeing and relaxation, it’s a solid choice.

This excursion is ideal for travelers who value small-group adventures, genuine wildlife encounters, and scenic beauty. It’s perfect if you want to avoid crowded boats and enjoy personalized attention and authentic local experiences. It’s also suited for nature lovers eager to see turtles and explore hidden caves. Foodies will appreciate the traditional tavern meal, and those wanting a relaxed, leisurely pace will find this outing a perfect fit.
However, if you’re looking for a fully-equipped day with restroom facilities onboard or prefer large, bustling tours, you might want to explore other options. This tour’s intimacy and focus on nature make it a memorable choice for those seeking authenticity over extravagance.

What is the departure time for this tour?
The tour starts at 10:00 am, with pickup offered from your accommodation or the closest meeting point.
Are drinks included in the tour?
No, drinks are not included, so it’s best to bring your own refreshments, especially since there are no snack or drink options at the port or on the boat.
Is this tour suitable for children or people with sea sickness?
Most travelers can participate, but if you’re prone to sea sickness, it’s advisable to take precautions. The boat is small, and there are no onboard restrooms, so plan accordingly.
What is the duration of the boat trip?
The boat cruise lasts approximately 5 hours 30 minutes, with about 3 hours passing the Keri Caves and 2.5 hours around Marathonisi.
Is there a guide on the boat?
Yes, guides are present and speak English and French, providing commentary and assistance during the trip.
Do I need to bring my own snorkeling gear?
The tour description doesn’t specify if snorkel gear is provided, but bringing your own is recommended for comfort and convenience, especially given the opportunity to swim.
Can I expect to see turtles during the tour?
While sightings depend on luck, several reviewers have reported seeing turtles swimming alongside the boat, which is a highlight for wildlife enthusiasts.
What should I wear or bring?
Light, comfortable clothing, sun protection, and swimwear are advisable. Remember, no onboard toilets or snacks, so pack accordingly.
What is the cancellation policy?
You can cancel up to 24 hours in advance for a full refund. The tour is weather-dependent, and poor conditions may lead to cancellations or rescheduling.
In summary, this Zakynthos small boat tour offers a well-rounded, authentic glimpse into the island’s stunning coastlines, caves, and wildlife. It’s best suited for travelers who enjoy intimacy, nature, and local flavors, with an appreciation for the natural environment. Whether you’re a wildlife enthusiast or simply seeking a peaceful day on the water, this trip promises memorable sights paired with the charm of small-group adventure.