Zakynthos: Marathonisi, Cameo Island and Keri Caves Tour

The best part of this Zakynthos outing is the mix: you get Caretta caretta turtle spotting, clear-water swimming, sea caves, a sandy island beach, and a taste of local olive oil in one five-hour trip. The glass-bottom boat is small enough to get close to the coast, though the viewing panel itself is not huge.

I like the hour on Marathonisi, where you can snorkel, stretch out on soft sand, and buy a snack from a floating canteen. I also like the helpful local guides, including George, Nicholas, Sakis, and Ilias, who have been praised for friendly island commentary and good care of their groups.

The main catch is pace. With several transfers and a boat shared by up to about 24 people, some departures feel rushed or crowded. Turtle sightings are never guaranteed, and the extra €5 entry fee for Cameo Island is not included.

Key points to know before booking

• Turtle spotting is wildlife viewing, not a swim with turtles: The boat may find Caretta caretta turtles, but sightings depend on season, weather, and luck.
• Marathonisi is the relaxing centerpiece: You get about an hour to swim, snorkel, visit the sandy beach, and buy food or drinks from floating stalls.
• Cameo Island costs extra: Entry is €5 per person, although some departures have included it or arranged access differently.
• Keri Caves are best seen from the water: The route includes the Kamara rock arch and a 20-minute swim near the cave entrance.
• The olive oil stop adds local flavor: Aristeon Olive Oil Press explains Zakynthos production and offers bread, olives, and flavored oils to taste.
• Bring your own beach kit: Towels and snorkeling gear are not supplied, and there are no toilets on the boat or Marathonisi.

What this five-hour Zakynthos tour actually includes

This is a compact coastal excursion from the south and east sides of Zakynthos. Dali Tours offers pickup within 10 kilometers of its office on Lomvardou 20 in Zakynthos Town, with service to places such as Laganas, Kalamaki, Lithakia, Argassi, Planos, Ano Vasilikos, Kipseli, Vanato, and Zakynthos Town.

You ride in a minibus to Agios Sostis, a small port near Laganas. From there, the boat carries you along the southern coast and around the protected waters of the National Marine Park of Zakynthos.

The advertised duration is five hours, including roughly 30 minutes in the van at the start, 20 minutes on the return transfer, and about 30 minutes at the olive oil press. The boat portion takes much of the middle of the day. In practice, timing can vary, especially when several groups are being moved between vans and boats.

I would treat this as a highlights trip rather than a slow day at sea. It gives you a broad taste of the area without asking you to organize transport, boat tickets, beach stops, and the olive oil visit yourself.

Cameo Island and its short bridge walk

Your first stop is usually Cameo Island, reached from Agios Sostis by a short footbridge. The bridge is the photo feature, with the little island and bright water making an easy first set of holiday pictures.

The island is small, so the 30-minute stop is enough for photos and a quick swim, but not for a long visit. The €5 entry charge is separate. Bring cash for it, since the tour information specifically advises carrying cash, and do not assume that admission will be included in your booking.

Cameo has a storybook look, but the appeal is mostly visual and aquatic. You can walk across the bridge, look back toward the port, and get into unusually clear water. One detail you might notice while swimming is small fish nibbling at minor scratches or flakes of skin. It is harmless, but it can surprise you.

This stop also exposes one of the tour’s timing issues. If your boat departure is close, you may have less than 30 minutes to decide if the entry fee is worth paying. I would pay it if you want the classic bridge photograph and a quick swim. If you prefer a relaxed island visit, return separately another day rather than expecting this tour to provide much free time here.

The glass-bottom boat and Caretta caretta turtles

After Cameo Island, you board the glass-bottom boat for the marine section of the trip. The boat ticket to Marathonisi is included, and the glass panel lets you look below the surface while the crew searches for turtles.

The panel is useful, but keep your expectations sensible. This is not a boat made mostly of glass. The viewing area is relatively small, and the boat may carry up to about 24 people. On full departures, the best view can require patience and a bit of position swapping.

The crew aims to watch the turtles without disturbing them. When a turtle appears, the boat may slow or pause so you can see it. Some outings have produced one turtle, while others have found several. In late October, sightings may be less likely, and some departures see none at all.

That uncertainty is part of the deal with wildlife. If seeing a turtle is the only reason you are booking, you may be disappointed. If you see one close to the boat, it can be a memorable moment, but the trip still has value through the swimming, cliffs, caves, and beach time.

The boat ride itself can be wet. One captain drove fast enough that people were soaked, which might feel refreshing in summer but uncomfortable in cooler October weather. Wear your swimsuit under your clothes and keep your camera or phone protected.

Marathonisi, the hour-long beach stop

Marathonisi is the tour’s best chance to slow down. The island is green and shaped somewhat like a turtle, and its sandy beach lies within the protected marine park. You get about one hour here, usually enough for a swim, a little snorkeling, and time on the sand.

The water is warm and clear in the main season. If you bring your own mask and snorkel, you can look for fish close to shore. Equipment is not provided, so pack it if snorkeling matters to you. You also need a towel, since the boat and beach stop will leave you wet.

Despite its nickname as Turtle Island, you should not expect turtles to be waiting on the beach. The name refers to the island’s shape and its role in the nesting area for endangered loggerhead turtles. Certain sections are cordoned off to protect nests, and you should stay out of restricted areas, even if other people ignore the signs.

There are floating canteens near the beach selling snacks, drinks, ice cream, and alcohol. Bring cash, since the need to pay for refreshments is easy to overlook. Food and drinks are not included, and you can also bring your own supplies.

The beach is a pleasure, but one hour goes quickly. If you want a long beach day, choose a dedicated beach trip instead. Here, Marathonisi works well as one part of a larger coastal route.

Keri Caves, Kamara arch, and the swim stop

Back on the boat, you head toward the Keri Caves. The route follows white beaches, forested hills, tall limestone cliffs, and rock arches along the coast. The boat passes through the Kamara arch, one of the more striking features on this section.

The caves are best appreciated from the water. The boat can approach the cliffs and cave openings, giving you views that are difficult to get from land. The setting is attractive even when the commentary is brief, though the amount of explanation depends on your guide and captain.

There is a 20-minute swim stop outside the entrance to a large cave. This is a proper open-sea swim, not a supervised pool session, so you should be comfortable in the water. The boat may bring swimmers close to the beach or stop near the rocks, depending on conditions.

You can skip the swim if you prefer to remain aboard. If you do swim, flip-flops are useful for the beach portions, but keep them secure on the boat. The tour does not supply towels or snorkeling gear.

This is one place where the boat’s size matters. A smaller boat can make the coast feel more immediate, but a full boat also means less room to move and fewer quiet moments. On some departures, passengers have found the seating tight during the longer rides.

The Aristeon olive oil stop in Lithakia

Once you return to port, a minibus takes you to the Aristeon ecological olive oil press museum in Lithakia. The stop lasts about 30 minutes and shifts the focus from sea views to Zakynthos food and farming.

An expert explains how olive oil is made on the island, with a look at local production methods and the press. The tasting includes olives, traditional bread, and several extra virgin olive oils, often flavored with lemon, orange, and garlic.

I think this works best as a short cultural stop after the water activities. It gives you something local to taste and a chance to buy olive oil or related beauty products if you wish. It is also useful if you want to take home something more connected to Zakynthos than a generic beach souvenir.

Do not book the tour mainly for the museum. The talk can feel promotional, and some visitors find 20 minutes of olive oil explanation less engaging than extra time at Marathonisi or the caves. Still, the tasting is included, and the stop helps explain one of the island’s everyday products.

Guides, boats, and the organization

The quality of the day depends partly on who is leading it. George has been singled out for friendly conversation and useful information about Zakynthos, while Nicholas, Sakis, and Ilias have also been praised for looking after groups and keeping the mood easy.

The driver and boat captain may be different people. That matters because the minibus guide can provide good island context while the captain focuses on navigation and safety. On some trips, the boat commentary is limited, so you may get more facts during the road transfers than at the caves or Marathonisi.

Pickup is generally arranged outside your hotel 30 minutes before the listed start time. The van carries a Dali Tours label in the front windshield. You can also meet at the company office 10 minutes before departure if you have your own transport.

Cruise passengers can arrange pickup at the cruise terminal, with timing adjusted to the ship’s schedule. That is useful, but allow a buffer because boat and van transfers can involve waiting. One group had a delayed pickup from Turtle Island, while another had confusion about which boat to board. These are not reasons to reject the tour, but they are good reasons to keep your schedule flexible.

The vans are air-conditioned, though a nine-seater can feel cramped. The boat may also feel crowded at full capacity. If personal space matters greatly to you, a private boat or smaller group would be a better fit.

Is $66 a fair price?

At $66 per person, the price is reasonable for a half-day that includes hotel pickup and drop-off, bottled water, the boat ticket to Marathonisi, turtle spotting, two swimming opportunities, the Keri Caves route, and olive oil tasting.

You are paying for convenience as much as scenery. Organizing the same day independently would mean finding transport to Agios Sostis, arranging a boat, checking marine park access, and getting to Lithakia afterward. The tour puts those pieces together.

The value is strongest if you want variety. A single outing gives you a bridge and island, wildlife viewing, a sandy beach, sea caves, and a local food stop. The value is weaker if you mainly want a long, quiet beach visit or a serious turtle-watching trip.

Budget an extra €5 for Cameo Island entry, plus money for food and drinks at Marathonisi. Snorkeling equipment and towels are also your responsibility. The tour offers free cancellation up to 24 hours before departure and reserve-now, pay-later booking, which helps if your plans are still shifting.

Who will enjoy this outing most?

I would recommend it to first-time visitors who want to see several of southern Zakynthos’s main sights without renting a car or planning a boat day. Families and couples can mix swimming with sightseeing, and the olive oil tasting gives non-swimmers something different to enjoy.

It also suits cruise passengers because the pickup can be coordinated with the ship’s schedule. The five-hour format gives you a broad look at the coast while leaving the rest of the day open, provided the transfers run on time.

You should think twice if you have mobility limitations. The experience includes a minibus, a footbridge, boat boarding, beach access, and swimming stops, and it is not suitable for wheelchair users or people with mobility impairments.

Pack sunglasses, a sun hat, sunscreen, swimwear, a change of clothes, a towel, flip-flops, beachwear, a camera, and cash. Wear your swimsuit under your clothes. There are no toilets on the boat or Marathonisi, so use the facilities before boarding.

Should you book the Cameo, Marathonisi, and Keri Caves tour?

Book it if you want a practical sampler of Zakynthos’s southern coast. The Marathonisi beach stop and Keri Caves swim are the strongest parts, and a turtle sighting can add a special moment. The olive oil tasting is a pleasant local extra, not the main event.

Skip it if you want guaranteed turtles, a spacious boat, or several hours on one beach. In that case, look for a smaller wildlife boat or a dedicated beach excursion. For most visitors who value variety and easy transport, $66 is a fair price, as long as you budget for Cameo Island and snacks and accept that the schedule can feel brisk.

FAQ

Is pickup included with the tour?

Yes. Pickup and drop-off are included within a 10-kilometer radius of the activity provider’s office at Lomvardou 20 in Zakynthos Town. Pickup can also be arranged at the cruise terminal, with times adjusted to the ship’s schedule.

How long does the tour last?

The listed duration is five hours. The schedule includes van transfers, visits to Cameo Island, Marathonisi, and Keri Caves, plus the Aristeon Olive Oil Press stop.

Is the €5 Cameo Island entry fee included?

No. Cameo Island entry costs €5 per person and is paid separately. The tour information advises bringing cash.

Are turtles guaranteed?

No. The tour provides turtle spotting from a glass-bottom boat, but sightings depend on conditions and the season. Late-season trips may see fewer turtles or none.

Can I swim and snorkel during the tour?

Yes. The tour includes swimming at Cameo Island, about one hour at Marathonisi, and a 20-minute swim near the Keri Caves. Snorkeling equipment is not included.

Are food and drinks included?

No. Bottled water is included, but other food and drinks are not. Floating canteens on Marathonisi sell snacks and refreshments, and you can bring your own supplies.

Are there toilets during the boat trip?

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