Zakynthos Small Boat Tour to Keri Mizithres and Marathonisi

Keri Caves, Mizithres, and Marathonisi pack some of Zakynthos’ best coastal scenery into a half-day outing. You’ll ride in a small boat rather than a large sightseeing vessel, with time for swimming, views of sea caves, and a possible glimpse of the island’s famous turtles. Marathonisi, or Turtle Island, is the emotional high point for many people.

I like the small maximum group of 12, which makes the boat feel more personal and gives you a better view of the coast. I also like that lunch is included, with the El Greco restaurant praised for its food and setting. The main catch is practical: there are no toilets on the boat or at Agios Sostis port, and drinks are not provided, so you need to plan ahead.

Key points to know before booking

• Keri Caves and Mizithres: You’ll pass dramatic rock formations and sea caves during the boat portions of the outing.
• Marathonisi by small boat: The route includes Turtle Island, with a chance to spot sea turtles in the surrounding waters.
• Maximum 12 people: This is a quieter alternative to a large-group cruise.
• Swimming time: The excursion includes stops where you can swim in clear coastal water.
• Lunch included: A meal is part of the package, with El Greco mentioned as the restaurant used on the day described by one guest.
• Bring your own refreshments: No drinks or snacks are sold at the port, and drinks are not included.

Setting out from Laganas to Agios Sostis

Your day begins around 10:00 am, with pickup available from your accommodation or an agreed location. Cretan Holidays contacts you a few days before departure with the exact pickup details, so keep an eye on your phone or booking messages.

The transfer is by air-conditioned vehicle. That matters in Zakynthos, especially on a warm morning when a road journey in a small, uncooled car can start the day badly. The exact transfer time is not stated, so I would avoid scheduling another fixed activity immediately after this one.

The boat leaves from Agios Sostis port. This is a working departure point rather than a full-service marina, so arrive prepared. There are no restroom facilities at the port, and you cannot count on buying coffee, water, or snacks there. Use a toilet before leaving your accommodation and bring the drinks you will want for several hours.

There are also no restroom facilities on the boat. This is the most important comfort warning in the entire experience. Most people can manage it, but anyone with a medical need or a very young child should think carefully before booking.

A small boat makes the coast feel closer

The boat carries no more than 12 people. That is a useful limit, not just a marketing detail. A small group means less crowding around the side of the boat and a better chance of seeing the coast without a wall of heads in front of you.

The boat is operated by a captain who also provides information during the ride. An in-person guide is listed in English and French, though the exact guide’s name is not provided. Do not expect a formal lecture at every stop. This is mainly a scenic boat outing, with commentary woven into the journey rather than a museum-style tour.

Small boats also have a trade-off. They can reach closer to coastal features and make swimming stops easier, but the ride may feel livelier than it would on a broad ferry. If you are prone to seasickness, prepare accordingly. The tour information specifically flags sea sickness as something to consider, though it does not provide a separate medication or seating recommendation.

Your safest plan is to eat lightly before departure, bring water, and carry any seasickness remedy you already know works for you. The sea can be calm, but conditions are never fully under the operator’s control.

Keri Caves and the white rocks of Mizithres

The first major coastal sights are the Keri Caves and Mizithres. The published schedule describes a three-hour boat cruise that passes the Keri Caves, so this is not simply a quick glance from a distant road. You’ll have a substantial stretch of time on the water to take in the rock formations, coves, and open views around the southern coast.

The Keri Caves are best appreciated from the boat. Their appeal comes from the contrast between pale rock, dark openings, and bright water. Depending on the sea conditions and the captain’s route, you might get close enough to appreciate the shapes of the cliffs without needing to walk anywhere.

Mizithres is another strong point. The name is linked with striking pale rock formations rising from the sea, and the setting is one of the places that gives this coast its postcard quality. The outing is not designed as a long beach visit at Mizithres, so set your expectations correctly. You are here to see the formations from the water, take photographs, and enjoy the scale of the coast.

This is where the small boat earns its keep. From a large vessel, the cliffs can become part of a crowded panorama. From a smaller craft, the captain can point out features and position the boat so you can see more clearly. The experience still depends on weather and sea conditions, so the exact route and stopping pattern can change.

Swimming stops give the day a welcome break

The trip includes opportunities to swim. That turns the excursion from a sightseeing ride into a more active half-day on the water.

You should bring a swimsuit, towel, sun protection, and a secure bag for valuables. These items are practical advice rather than listed inclusions, since the supplied details do not specify beach equipment or storage. Do not assume that changing facilities are available at the port or on the boat.

Swimming is also a good reason to choose this tour over a purely scenic cruise. After time spent looking at cliffs and caves, getting into the water gives the day a natural rhythm. You see the coast, swim, return to the boat, and continue toward the next sight.

The exact length and location of each swim stop are not stated. That means you should not book this if you need a guaranteed beach session of a particular duration. Think of swimming as part of the route, not the sole purpose of the excursion.

Marathonisi, the island known as Turtle Island

The route also passes Marathonisi during a boat cruise described as about two and a half hours. Marathonisi is widely known as Turtle Island, and the surrounding waters are associated with Zakynthos’ sea turtles.

A turtle sighting is possible, not promised. Wildlife does not follow a timetable, and the boat’s role is to look for animals without turning the outing into a guaranteed encounter. Keep your camera ready, but enjoy Marathonisi even if no turtle appears. The island itself and the ride around it are major reasons to take the trip.

The views around Marathonisi are especially attractive from the water. You’ll see the island’s coast, bright water, and the shape of the shoreline from an angle that is impossible from the main roads of Zakynthos. One of the strongest reasons to book this experience is that the boat reaches places you would not see on a normal island sightseeing drive.

The boat’s captain has been praised for pointing out scenic places and turtles during the ride. That personal attention is more likely with a group of 12 than on a packed excursion boat. Still, the level of commentary can vary because the captain is handling the boat as well as explaining the route.

Lunch at El Greco helps break up the cruise

Lunch is included, which makes the $112.23 price easier to assess. You are paying not only for transport and the boat but also for a meal, a guide, and a small-group coastal route. A meal included in the package also means you do not have to spend your swimming time searching for a restaurant.

The restaurant identified in the available information is El Greco. It is described as a pleasant place with good food, and one account specifically praised both the meal and the restaurant. Exact menu choices, dietary arrangements, and lunch timing are not provided, so contact the operator in advance if you have special food needs.

Lunch also explains why the outing is not five and a half hours of nonstop boating. The total duration is approximately 5 hours and 30 minutes, and part of that time includes transport and the meal. One account felt that too much time went to transportation, waiting, and the restaurant, while other accounts considered the organization and meal a strong part of the day.

That difference is useful. If you want a long, uninterrupted boat adventure, this may feel padded. If you prefer a half-day outing with a proper meal and a break from the sun, the structure works better.

What the $112.23 price really covers

At $112.23 per person, this is not the cheapest way to see Zakynthos by boat. The value comes from the combination of several services: air-conditioned pickup, a small boat limited to 12 people, English or French in-person guidance, swimming opportunities, lunch, and a route covering Keri Caves, Mizithres, and Marathonisi.

A lower-cost shared cruise may be better if your only goal is to get on the water. You may also prefer a larger boat if you want more room, onboard facilities, or a steadier ride. This tour makes more sense when you value a small group and want the day arranged from pickup through lunch.

Drinks are not included. That is a minor extra cost, but it is also a planning issue because there is nowhere to buy them at Agios Sostis port. Bring enough water and any soft drinks you want before pickup. You should not count on purchasing refreshments during the excursion.

The price is strongest for people staying in or near Laganas who want one organized coastal outing without arranging transport, a boat, lunch, and a route separately. It is less compelling for someone who already has a rental car and plans to book a very short boat ride from the port.

Timing, group size, and the real pace of the day

The official duration is approximately 5 hours and 30 minutes. The itinerary describes a three-hour boat cruise involving Keri Caves and a two-and-a-half-hour cruise involving Marathonisi, while the day also includes road transport and lunch. Because those time descriptions overlap with the overall excursion length, I would treat the schedule as approximate rather than a minute-by-minute promise.

One account expected a longer excursion and felt that transportation and waiting reduced the time on the water. That is worth noting before you book. Pickup tours always take longer than simply meeting a boat at the dock, and the vehicle may collect people from more than one location.

The maximum of 12 people keeps the boat portion intimate, but it does not necessarily mean every part of the day is private. Pickup and lunch arrangements may involve other people, and the supplied details do not say that the boat is exclusively reserved for your own party.

The best approach is to leave your schedule open around the tour. Do not place a timed museum visit, ferry, or airport transfer immediately afterward.

Who should book this Zakynthos boat tour?

You are a good match for this outing if you want:

• A half-day introduction to Zakynthos’ southern coast
• A small boat instead of a large cruise vessel
• Swimming stops and scenic coastal views
• A chance to see Marathonisi and possibly sea turtles
• Pickup and lunch arranged for you
• Guidance in English or French

Families and couples may like the manageable group size, provided everyone can handle the lack of toilets. People who enjoy photography will appreciate the caves, rock formations, and water-level views, though the boat may move often enough that you will want to keep your camera secure.

You may want a different experience if you need onboard toilets, guaranteed wildlife sightings, a private boat, or a full day spent swimming. You should also reconsider if seasickness is a serious problem for you.

The tour requires good weather. If poor conditions force cancellation, you are offered another date or a full refund. You can cancel for a full refund up to 24 hours before the start time, but changes or cancellations inside that window are not accepted.

Should you book it?

I would book this tour if you want an organized, small-group way to see several famous coastal sights in one morning and afternoon. The strongest features are the 12-person boat, the chance to swim, the views around Keri Caves and Mizithres, and the visit to Marathonisi with possible turtle spotting.

I would skip it if you dislike boats without toilets, need a precise timetable, or want more time at each beach rather than a moving coastal tour. Bring water, use the restroom before departure, plan for changing sea conditions, and keep your afternoon free.

For the right person, $112.23 is a fair package price because it includes transport, lunch, guiding, and a small boat route that would be awkward to arrange on your own.

FAQ

Where does the tour start?

The tour begins with pickup arranged through Cretan Holidays, followed by transport to Agios Sostis port. You will receive the exact pickup information a few days before the tour.

What time does the tour start?

The listed start time is 10:00 am.

How long does the tour last?

The experience lasts approximately 5 hours and 30 minutes, including transport, the boat portions, and lunch.

Is lunch included?

Yes. Lunch is included. Drinks are not included.

Are there restrooms on the boat or at Agios Sostis port?

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

How many people can join the boat tour?

The activity has a maximum of 12 people.