Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi

The best part of this Zakynthos outing is the small boat. With no more than 12 people, you get a closer look at the coast around Keri, Mizithres, and Marathonisi than you would from a large excursion boat. I like the chance to swim in clear sea coves, and I like that the route includes Turtle Island, where you may spot loggerhead turtles.

The price includes pickup, an air-conditioned vehicle, lunch, and an English or French-speaking guide. The main thing to watch is the timing: the full experience lasts about 5 hours and 30 minutes, but transfer time, waiting at the port, boat time, and lunch can make the day feel quite different from one departure to the next. There are also no toilets or refreshment sales at Agios Sostis port or on the boat.

Key points to know before booking

• Small boat, maximum 12 people: This keeps the ride more personal and makes it easier to see the coastline from the water.
• Three major sights: The route passes Keri Caves, the striking Mizithres area, and Marathonisi, also called Turtle Island.
• Swimming is part of the appeal: Bring what you need for a sea swim, since there is no place to buy drinks at the port.
• Lunch is included: The meal is served at El Greco, a restaurant praised for its pleasant setting and food.
• Pickup is offered: Exact pickup details arrive a few days before departure.
• Weather matters: Poor conditions can lead to a new date or a full refund.

Why the small boat makes a difference

Zakynthos is best appreciated from the sea. Roads can show you villages and beaches, but a boat reveals the pale cliffs, sea caves, and tucked-away swimming spots that are difficult to reach by land.

This tour keeps the group to 12 people at most. That is a useful limit. You are less likely to spend the day in a crowd, and the captain can give attention to the group while steering close to the sights. The boat is also fast enough to cover a good stretch of the southern coast during a half-day outing.

You should not expect a private charter. You will share the boat with other people, and the amount of time spent at each place depends on sea conditions and the captain’s plan. Still, the small-group format gives this trip a more relaxed feel than a large party cruise.

The boat captain also provides information during the ride. A guide is available in English and French, but the exact balance between formal guiding and commentary from the captain may vary. If you want a long, detailed history lesson at every stop, this may feel light. If you mainly want scenery, swimming, and a captain who points out the best views, the format works well.

From Laganas to Agios Sostis port

The day begins at 10:00 am, with pickup available from your area. You will receive the exact pickup information from Cretan Holidays a few days before the tour, so keep an eye on your messages rather than assuming a fixed hotel collection time.

Transport is provided in an air-conditioned vehicle. This matters in Zakynthos, especially during warm weather, but remember that the listed 5 hours and 30 minutes includes the whole outing, not only the time spent on the water.

The boat leaves from Agios Sostis port. Plan ahead before you arrive. There are no restroom facilities at the port, no toilet on the boat, and no place there to buy snacks or drinks. Use a restroom before pickup and bring water with you. This is the most important practical tip for the day.

If you are prone to seasickness, take the warning seriously. A small motorboat can move sharply over waves, especially when traveling quickly. The tour information does not promise a special seasickness service, so bring any personal remedy you normally use and choose your seat carefully.

Keri Caves and the southern coast

The first major part of the route takes you past the Keri Caves. These are viewed from the boat, so you are not entering the caves on foot. The reward is the changing view of the cliffs, openings in the rock, and bright water along this part of the coast.

The information for the boat portion describes about three hours of cruising in one part of the itinerary. That does not mean three hours of nonstop sightseeing at one cave. The cruise includes movement between locations, views from the water, and stops that can include swimming.

Bring a phone or camera, but protect it from spray. The best photographs often come when the boat turns toward the rock faces or passes close to a cave opening. You will want to keep your hands free at times, too, especially if the boat is moving quickly.

The Keri section is one of the tour’s strongest points because it gives you access to scenery that would be hard to appreciate from a road. You do not need to be an experienced swimmer or hiker to enjoy it. Just remember that a boat pass is different from a cave walk, and the emphasis here is on the view.

Mizithres, sea cliffs, and swimming time

Mizithres is one of the eye-catching places on the route. The area is known for its dramatic rock formations and bright water, and it is the sort of setting that makes a boat trip worthwhile even before the swimming begins.

The exact swimming arrangements are not set out in detail, so you should treat the stops as dependent on weather and sea conditions. Several parts of the experience are designed for swimming, though, and the tour is a good match if you want time in the water rather than a purely scenic cruise.

Pack a swimsuit, towel, sunscreen, and a cover-up. Water and drinks are especially important because you cannot buy refreshments at the port or on the boat. Lunch is included later, but that does not replace carrying something to drink during the cruise.

Mizithres is also a good reminder to keep expectations sensible. Small-boat tours are active. You may need to step carefully, climb in and out of the water, and cope with a moving deck. The activity says most people can participate, but anyone with mobility concerns should consider the boat’s movement and the lack of onboard toilet facilities before booking.

Marathonisi, known as Turtle Island

The cruise also passes Marathonisi, the island commonly called Turtle Island. This area is linked with loggerhead turtles, and turtle spotting is one of the most appealing parts of the trip.

Wildlife sightings are never guaranteed. The boat may find turtles, but you should regard them as a fortunate part of the outing rather than a promised performance. The route gives you a chance to look for them while enjoying the coastline and sea around Marathonisi.

The Marathonisi section is described as about 2.5 hours of cruising in the tour details. As with the Keri portion, that figure should not be read as one continuous stop at the island. It reflects the broader boating schedule, including travel between sights and time on the water.

You will likely enjoy this part most if you care about nature and want to see Zakynthos from a different angle. The island itself is also attractive for its pale shore and clear water, though the supplied details do not promise a specific amount of time ashore. Ask the captain about the day’s plan if landing on Marathonisi is important to you.

Lunch at El Greco

Lunch is included, which improves the value of the package. A meal during a half-day excursion saves you from arranging a separate restaurant stop and gives the day a natural pause away from the boat.

The restaurant associated with this outing is El Greco. It has been praised for its friendly atmosphere and good food, and it appears to be an important part of the overall experience rather than a quick snack served on board.

Drinks are not included. This point is easy to miss when comparing boat tours, so budget for beverages and bring water from the start. There are no purchases available at Agios Sostis port, and the boat does not provide a refreshment stop.

Lunch also affects the pace. You are not spending every minute cruising. One less favorable timing experience involved a long transfer, a wait before boarding, shorter boat time than expected, and a substantial restaurant portion. The advertised total is about 5 hours and 30 minutes, so this tour suits you best when you want a combined boat-and-lunch day rather than a pure three-hour sailing trip.

How much value do you get for $112.23?

At $112.23 per person, this is not the cheapest way to reach the southern Zakynthos coast. The price makes more sense when you count the included pickup, air-conditioned transport, small boat, guide, and lunch.

You are paying for convenience as much as for the cruise. You do not need to arrange transport to the port, find a boat operator, plan a route around Keri and Marathonisi, or choose a restaurant afterward. For a first visit to Zakynthos, that can be worth the extra cost.

The value is weaker if you already have a car, prefer to arrange your own boat, or want a full day on the water. The tour is a half-day experience, and the time spent on transfers and lunch means the boat portion may feel shorter than the headline sights suggest.

The maximum group size of 12 helps protect the value. A low price on a crowded boat can be disappointing, while a small group gives you more room and a better chance to hear the captain’s comments. I would compare this tour with private charters only if you are traveling as a group and can divide the higher cost.

Who should book this Zakynthos tour?

I would recommend it to you if you want to see several southern-coast highlights in one organized outing. It suits couples, families, and small groups who value pickup and lunch and who do not want to manage the details themselves.

It is also a strong choice if you want a mixture of activities. You can cruise, look for turtles, photograph the caves, swim, and eat at a local restaurant in one morning and afternoon.

You may want another option if you need a toilet close by, dislike fast boat rides, or are very sensitive to seasickness. The lack of facilities is not a minor detail. There is no restroom at the port and none on board.

The tour also may not suit you if you expect a guide beside you every minute. On the water, the captain handles the boat and gives information during the ride. That is useful, but it is not the same as having a full-time land guide leading a structured sightseeing tour.

Booking, weather, and practical preparation

Confirmation is provided when you book, and the experience is often reserved about 30 days ahead. If your dates are fixed, booking early is sensible, especially during the busy summer period.

The tour requires good weather. If poor conditions cancel the outing, you can choose another date or receive a full refund. You can also cancel for a full refund if you do so at least 24 hours before the start time. Changes or cancellations made inside that window are not accepted and are not refunded.

Before leaving, pack:

• Water and any snacks you need
• Swimsuit and towel
• Sunscreen and a hat
• Seasickness medication if needed
• A waterproof case for your phone
• Cash or another way to pay for drinks at lunch, since drinks are not included

The activity is offered in English, with French also available. Most people can participate, but the boat setting, lack of toilets, and sea conditions remain important considerations.

Should you book it?

Book this tour if you want an easy, small-group way to see Keri Caves, Mizithres, and Marathonisi without arranging transport or lunch yourself. The strongest reasons are the 12-person limit, swimming opportunities, turtle spotting, and the chance to reach coastal views that are difficult to see from land.

Skip it if your priority is uninterrupted boat time, private service, or guaranteed wildlife sightings. At $112.23, the tour offers fair value when you use the transport and meal, but the schedule includes more than cruising.

For most people staying around Laganas, this is a practical introduction to Zakynthos from the sea. Just use the restroom before departure, bring your own water, and judge the day by the whole experience rather than by the minutes spent in front of each cave.

FAQ

Where does the Zakynthos small boat tour begin?

The boat departs from Agios Sostis port. Pickup is offered, and exact pickup information is sent a few days before the tour.

What time does the tour start?

The scheduled start time is 10:00 am.

How long does the full experience last?

The tour lasts approximately 5 hours and 30 minutes.

How many people can join the boat?

The maximum group size is 12 people.

Which places does the boat visit?

The route includes Keri Caves, Mizithres, and Marathonisi, also known as Turtle Island.

Is lunch included?

Yes. Lunch is included, with the restaurant El Greco associated with the outing.

Are drinks included?

No. Drinks are not included, so you should bring water and budget for beverages with lunch.

Is there a toilet on the boat?

No. There are no restroom facilities on the boat or at Agios Sostis port.

Is the tour available in English?

Yes. An in-person guide is available in English and French.

What happens if bad weather cancels the tour?

You will be offered a different date or a full refund if poor weather causes the tour to be canceled.