Zakynthos: Marathonisi, Cameo Island and Keri Caves Tour

The star of this half-day outing is the glass-bottom boat ride through the Keri Caves and around Marathonisi, where white cliffs, sea arches, and clear water make the south coast look almost painted. You also get a short beach stop on Marathonisi, a chance to look for loggerhead turtles, and a visit to an olive oil press.

I like the easy door-to-door transport and the mix of sea time with a small taste of local food culture. Guides such as George, Christos, and Giani have earned warm praise for their friendly care, lively manner, and skill on the water. The main drawback is that the boat can feel crowded, turtle watching can involve several boats circling one animal, and the schedule may change if cruise ship tenders or late arrivals hold things up.

Key points to know before you book

• The Keri Caves are the strongest part: The boat passes into small caves and beneath the Kamara rock arch, followed by a 20-minute swim stop outside a large cave.

• Marathonisi is a beach stop, not a quiet island escape: You get about an hour on its small sandy beach, but space can be limited and there are no toilets.

• Cameo Island costs extra: Entry is not included and costs €5. The wooden bridge, white hanging sheets, and limestone cove make it photogenic, but the island can be packed.

• Turtle sightings are never guaranteed: The boat searches the National Marine Park, yet the number of turtles you see depends on the day and the season.

• Pickup is convenient but not universal: Pickup is free within 10 kilometers of Dali Tours in Zakynthos Town. A €25 total fee applies for many accommodations between 10 and 20 kilometers away.

• Bring your own swimming kit: Towels, sunscreen, and snorkeling equipment are not included. Wear your swimsuit under your clothes, and use the toilet before boarding.

What this Zakynthos half-day tour actually feels like

This is a busy five-hour outing built around the southern coast of Zakynthos. You move from hotel van to port, from port to glass-bottom boat, then back into the van for the olive oil visit. It is not a slow, private cruise, but it is an efficient way to connect several popular sights without renting a car or arranging separate boat tickets.

The group can reach up to 23 people. That number matters. A full boat means less room to move and more waiting when people are boarding or returning from the beach. On the other hand, the Mercedes-Benz transfer and local driver take the strain out of getting between the sights.

The day begins with pickup outside your accommodation or at the Dali Tours office on Lomvardou 20 in Zakynthos Town. Your driver provides a free map and explains the plan. George has been especially well liked for his warm manner and upbeat music, while other guides, including Christos, have been praised for their care and enthusiasm.

The timing is usually straightforward, but cruise ship passengers should allow for tender delays. The operator may wait for people coming ashore from a ship, which is considerate if you are the person still on the tender. It can also mean a late start, a rushed stop, or a skipped portion of the plan. If you are on a tight cruise schedule, confirm the pickup arrangement and return time before booking.

Cameo Island and its famous wooden bridge

Your first stop is Cameo Island, just off Agios Sostis. A wooden footbridge leads from the shore to this small island, and the entrance gives you one of the most recognizable photo scenes in southern Zakynthos. White sheets flutter above the water, limestone walls surround the little cove, and weddings take place here.

You have about 30 minutes. That is enough to cross the bridge, take photos, and possibly swim at the small beach. It is not enough for a long, unhurried island visit, especially when the area is crowded or the tour has started late.

Cameo Island charges an additional €5 entry fee. That cost is easy to miss when comparing prices, so add it to your budget. The island is attractive, but I would treat it as a brief photo and swim stop rather than the main reason to book the excursion.

At the end of the season, the experience can feel less special. Some facilities may be quiet, and the beach may seem like a simple strip of sand rather than a dreamlike retreat. In high season, the opposite problem applies: you may find little room to sit or swim.

Glass-bottom boating in the National Marine Park

After returning across the bridge, you board the glass-bottom boat for the sea portion of the tour. The National Marine Park of Zakynthos protects important loggerhead turtle habitat around the southern coast, and the boat searches the bay for turtles surfacing to breathe.

The glass panel gives you another way to watch the water. The crew may point out a turtle below the boat or tell you when one is about to surface. This can be a memorable moment, but it is important to keep expectations in check. Turtles are wild animals, not a scheduled attraction, and some outings see several while others see none.

The turtle stop also raises an ethical question. When a turtle appears, several boats may gather around it. You might get a close look, but the scene can feel uncomfortable if boats circle too tightly or remain near the animal for too long. If wildlife welfare is central to your trip, you may prefer to treat a sighting as a bonus rather than the purpose of the excursion.

There is no toilet on the boat. Use the facilities before departure, since there are also no toilets on Marathonisi. Bottled water is said to be available in the van, but it is not supplied on the boat itself. Bring your own water if you want a drink in your hand during the cruise.

Marathonisi beach, turtle nests, and one hour ashore

Marathonisi is a green island within the marine park. The boat passes along its coast and enters two impressive caves before heading to the small golden beach. You get about an hour here, with time to swim, snorkel, sunbathe, or buy a snack from one of the floating canteens.

The beach is tied to the island’s role as a nesting area for loggerhead turtles. Roped sections mark protected nests, and you must stay outside those areas. This is one of the more meaningful details of the stop: you are seeing a working protected habitat, not simply a beach laid on for tourists.

The beach itself is not large. With several boats arriving, it can feel crowded, and finding space for a towel may be difficult. Some people enjoy the water more than the sand, while others would rather remain on the boat. You may also get wet while boarding or leaving the boat, so keep phones and valuables protected.

There are floating canteens for refreshments, but food and drinks are not included. Take a small snack if you need one, though keep all waste with you and respect the protected setting. You should also bring sunscreen, a towel, and snorkeling gear if you want to look below the surface. None of those items are supplied.

A practical point: the stated one-hour stop assumes everyone returns on time. If people walk to another part of the island or delay boarding, the boat may wait and later stops can become rushed. Stay near the agreed meeting point and listen carefully for the return instruction.

Keri Caves and the Kamara rock arch

The Keri Caves are the best reason to choose this tour over a basic beach transfer. Along the southwestern coast, the boat passes white beaches, rock arches, forested hills, and tall limestone cliffs. The captain takes the glass-bottom boat into small caves and through the famous Kamara arch when conditions permit.

Inside the caves, sunlight reflects off the water and turns the walls different shades of blue. The boat ride is close and visual rather than heavily lecture-based, so keep your camera ready but protect it from spray.

The tour includes a 20-minute swim stop outside the entrance of a large cave. The water is clear, and this is often the most enjoyable part of the day for confident swimmers. You can snorkel and look for marine life, or remain aboard and enjoy the view if you do not want to enter the water.

Take the swimming conditions seriously. The water may have a current near the caves, and the boat does not always provide swim aids. If you are not a strong swimmer, stay close to the boat or skip the swim. Parents should make an honest assessment of their children’s ability before allowing them into open water.

Some descriptions of the trip can make this stop sound like a long swim through caves. In practice, you usually get a short swim outside one cave while the captain handles the boat work. The cave passages and the coastline views carry most of the appeal.

Aristeon Olive Press and the taste of Zakynthos

Back on land, the van takes you to the Aristeon Ecological Olive Press. This final stop shifts the mood from sea scenery to local food culture. Olive trees and olive oil are central to Greek life, and the outdoor museum shows how production changed from old wooden tools to stone mills and modern machinery.

The visit lasts about 30 minutes. You see the equipment, hear about the process from harvesting to pressing, and taste local olives with village bread and several extra virgin oils. Flavors may include lemon, orange, and garlic.

This is not a long museum visit. The presentation can feel quick, with a short explanation near the machinery, a video, tasting bowls, and an opportunity to buy products. If you enjoy food traditions and want a small local souvenir, it adds real value. If you prefer every minute to go toward beaches and caves, you may find the stop too brief.

I like the contrast. After several hours of salt water and bright cliffs, tasting olive oil gives you a small connection to the island beyond its beaches. It also makes the tour more than a standard boat outing.

Price, transport, and what you really get for $67.28

At $67.28 per person, the price is reasonable if you value convenience. It includes hotel pickup within the free radius, the van transfer, the boat ticket to Marathonisi, insurance, bottled water in the vehicle, and the olive oil tasting. You would otherwise need to arrange transport to the port, find a boat, and organize your own route between Agios Sostis, the southern coast, and the olive press.

The value drops if you are mainly paying for a quiet beach day. This is a shared tour with up to 23 people, fixed swim stops, and a schedule that can be affected by other passengers. You also pay €5 to enter Cameo Island, and a €25 total pickup and drop-off fee may apply if your accommodation is more than 10 kilometers from the Zakynthos Town office but within roughly 20 kilometers.

Pickup is free from accommodations within 10 kilometers of Lomvardou 20. If you are farther away, contact the operator before booking. Some cruise passengers are collected near the tender terminal, and the timing can be adjusted around the ship schedule, but delays may reduce time at individual stops.

The tour is conducted in spoken English. Guides and drivers can be friendly and helpful, but communication may be harder when a driver’s English is limited or when instructions are given over boat noise. Ask questions early, especially about swim times, the meeting point, and the return schedule.

What to pack for the five-hour outing

Wear your swimsuit under your clothes. You may have two opportunities to enter the water, and changing space is limited.

Pack:

• Towel
• Sunscreen
• Snorkeling equipment
• Refillable or extra bottled water
• A small snack
• Waterproof protection for your phone and wallet
• Comfortable shoes for the bridge and Cameo Island

There are no toilets on the boat or Marathonisi. Use the toilet before boarding, and do not count on the olive press as an early break. You may find refreshments at the floating canteens on Marathonisi, but food and drinks are not part of the tour price.

The van’s air conditioning has not always felt strong enough on very hot days. Light clothing, a hat, and water will make the ride more comfortable. If you are sensitive to heat, ask where you will wait during any delay.

Who should book this tour?

I would choose this tour if you have only half a day in Zakynthos and want to combine the south coast, a boat ride, swimming, and a small food visit. It works particularly well for first-time visitors who do not want to drive or compare several local boat operators.

It also suits confident swimmers who enjoy moving through a full schedule. The Keri Caves, Kamara arch, and clear water are the strongest attractions, while the olive press gives the day a local finish.

I would think twice if you want peace, personal space, or careful wildlife watching. A private boat would give you more control over the timing and probably reduce the crowded feeling around the turtles and beaches. I would also be cautious if you have limited mobility, dislike getting wet, or need guaranteed toilet access.

Weather can change the plan. If poor weather cancels the trip, you are offered another date or a full refund. Free cancellation is available up to 24 hours before the start time, while later cancellations and changes are not refunded or accepted.

Should you book the Marathonisi and Keri Caves tour?

Book it for the Keri Caves, sea arches, swimming, and easy transport, not for a guaranteed turtle encounter or a quiet island beach. The tour packs a lot into five hours and earns its price when you want a broad taste of southern Zakynthos without handling the logistics yourself.

Before paying, check your pickup distance, add the €5 Cameo entry fee, and bring everything needed for swimming. If you can accept a shared boat, possible delays, and a quick olive oil visit, this is a useful and scenic introduction to the island’s southern waters.

FAQ

How long does the Zakynthos tour last?

The tour lasts approximately five hours, including pickup, the boat trip, the beach and swimming stops, and the visit to the Aristeon Olive Press.

Is hotel pickup included?

Free pickup is available within 10 kilometers of the Dali Tours office at Lomvardou 20 in Zakynthos Town. Pickup farther away, up to around 20 kilometers, costs €25 in total for collection and return.

Is entry to Cameo Island included?

No. Cameo Island charges an additional €5 entry fee.

Are boat tickets included?

Yes. The boat ticket to Marathonisi is included, as is the glass-bottom boat portion of the experience.

Are food and drinks included?

No food is included. Bottled water is available in the vehicle, and floating canteens on Marathonisi sell snacks and refreshments. You can also bring your own food and drinks.

Are towels and snorkeling equipment provided?

No. You need to bring your own towel, sunscreen, and snorkeling equipment.

Are there toilets during the tour?

There are no toilets on the boat or on Marathonisi Island. Use the toilet before boarding the boat.

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.