Laganas Zakynthos: Marathonissi, Keri Caves and Turtles Spot

The main draw here is a chance to see loggerhead turtles in Laganas Bay before swimming through some of Zakynthos’s clearest coastal water. The glass-bottom boat gives you something to watch even when turtles stay out of sight, and the route packs three swimming stops into three hours.

I like the mix of wildlife and easy beach time, especially the stops at the Keri Caves and Marathonissi. I also like the modest $29 price, the shaded seating, and the choice of a sunny upper deck. The catch is that turtle sightings are never guaranteed, and getting aboard means walking several metres into the sea, so this trip is not suitable for wheelchair users or anyone who needs a dry, step-free boarding point.

Key points to know before booking

• Turtle watching is the main attraction: You may see caretta caretta loggerheads in Laganas Bay, sometimes directly beneath the glass floor.
• Three swimming stops are included: Swim near the Keri Caves, at Turtle Island, and from Marathonissi Beach.
• Marathonissi is your only refreshment stop: Buy a drink, snack, or ice cream there, or bring your own food and drinks.
• The boat has both sun and shade: Use the sundeck for sunbathing or the covered seating area for a cooler ride.
• Boarding is from the water: Wear your swimsuit, and expect to store shoes in boxes before departure.
• The trip lasts three hours: It is a good half-day add-on from Laganas, without taking over your whole day.

Starting from Laganas Beach

You meet the YOTOMU team on the beach in Laganas. Look for the Yotomu Laganas Boat Trip sign, along with a table and beach umbrella. The meeting point is simple, but do not arrive expecting a conventional harbor check-in. Your most useful preparation is to wear swimwear from the start.

One practical detail matters: you walk several metres through the sea to board. Shoes are stored in boxes before departure, so sandals or water shoes are useful for the approach, even though you will not keep footwear on the boat. Take only a small bag. Large luggage is not allowed.

There is no hotel pickup or drop-off, so you need to make your own way to the beach meeting point. The activity is offered with English, Greek, and Italian-speaking staff, and a skipper handles the boat portion.

What the glass bottom adds

The transparent floor is not a substitute for a dedicated wildlife expedition, but it gives the trip a useful second focus. While the boat moves around Laganas Bay, you can watch the water below instead of looking only toward shore.

The best turtle sighting may be quick. You might see a shell, a shadow, or a turtle surf near the boat. One especially good possibility is a loggerhead directly below the glass floor, where everyone gets a clear look without needing to lean over the side.

That said, the glass bottom does not guarantee constant action. If no turtle appears, you are still watching the sea floor and passing water from the boat. Keep your expectations sensible: this is a relaxed coastal outing with turtle spotting, not a guaranteed wildlife encounter.

The boat gives you two ways to spend the ride. The sundeck suits you if you want sun and open views. The shaded seating area is the better choice if you want shelter from the heat or prefer a calmer place to sit. I appreciate that choice because three hours on open water can feel very different depending on the weather.

Looking for caretta caretta in Laganas Bay

The first major purpose of the trip is turtle spotting in Laganas Bay. The loggerhead turtle, known locally as caretta caretta, is the animal most people hope to see. The boat moves through the marine park while you look for turtles at the surface and through the glass floor.

A turtle may appear only briefly, so keep watching rather than assuming the guide will announce every moment. If you are travelling with children, the glass floor gives them something to do between sightings. It also makes the wildlife search more accessible than standing at the rail and waiting for a fin or shell to appear.

There is an important ethical point to keep in mind. A turtle sighting can attract several boats at once. One account of the trip described five boats surrounding a single turtle, along with a strong smell from boat exhaust. That is a fair reason to think carefully about the wildlife side of the outing.

You cannot control how other boats behave, but you can choose to watch quietly and avoid encouraging close approaches. The enjoyment of seeing a turtle should not come at the animal’s expense. If your priority is a strict wildlife experience with minimal boat traffic, this may not meet your hopes. If you see the turtle search as one part of a broader swimming and sightseeing trip, the balance may work better for you.

Swimming near the Keri Caves

The first swimming stop is near the Keri Caves. The boat pauses so you can get into the clear water for a refreshing swim. This is less about a long shore visit and more about enjoying the setting from the sea.

The cave area gives the stop a change of mood from the open bay. You see rock formations close to the water and get a chance to cool off after sitting in the sun. Bring a towel, but remember that space on a boat is limited, so pack lightly.

The available details do not specify how long the boat stays at each stop. Plan for a short, shared excursion rather than a private swim session. You will have time to get into the water, but you should not expect to linger alone in one cave or choose your own schedule.

If you do not want to swim, you can remain on board and use the shaded seats or sundeck. Still, swimming is a major part of the experience, and the trip makes the most sense if you are comfortable getting wet.

Turtle Island and the large cave

The boat continues toward Turtle Island, where you get another chance to swim and see a large cave. This stop gives the outing a little more variety. You are not simply repeating the first swim in a different place, since the cave is a specific feature of the route.

The name Turtle Island can make this sound like a guaranteed turtle stop, but the information provided only promises turtle spotting in Laganas Bay. Treat the island primarily as a scenic swimming location, with wildlife sightings possible along the route.

The boat trip lets you view the cave from the water rather than arriving for a long land visit. That makes the stop easy and time-efficient, but it also means you will not have the freedom of a full island exploration. You swim, look around, and return to the boat when the group moves on.

This is a good fit for you if you want several short experiences in one outing. It is less suitable if you prefer spending a whole afternoon at one beach or exploring a single cave at your own pace.

Marathonissi Beach and the only refreshment stop

The final main stop is Marathonissi, also known as Turtle Island in the tour description. Here, the boat stops by a sandy beach. You can swim again, sit on the sand, and buy a drink, snack, or ice cream.

This is the most practical place to break up the boat ride. A cold drink or ice cream makes the stop feel more like beach time than a simple swim pause. Food and drinks are not included, and Marathonissi is the only place during the trip where refreshments are available for purchase.

Bring your own water and snacks if you do not want to rely on the island stop. The instructions specifically allow you to take food and drinks with you. Pack them in a small, secure bag, since large bags and luggage are not permitted.

Do not expect a full beach day here. The visit is part of a three-hour boat route, so your time on Marathonissi is limited by the return schedule. You get sand, swimming, and the option to buy something cold, but not an extended stay with a full range of facilities.

What the $29 price really buys you

At $29 per person, this is priced as an accessible group boat trip rather than a luxury cruise. The fee includes the boat, skipper, turtle spotting, and swimming stops at the Keri Caves, Turtle Island, and Marathonissi Beach.

That is good value if you want several Zakynthos highlights without arranging separate transport or renting your own boat. You get three hours on the water, wildlife viewing, a glass-bottom boat, and several chances to swim. The price also makes sense for a family or a couple who wants a simple activity from Laganas.

The value is less clear if your main goal is a guaranteed close turtle encounter. Wildlife is unpredictable, and sightings can be brief. You are paying for the route and the opportunity, not a promise that turtles will appear on demand.

Food, drinks, and hotel transport cost extra. Those exclusions are easy to manage, but they affect your real budget. Bring your own supplies and make your way to the beach independently if you want to keep the outing close to the advertised price.

The trip earns a 4.1 rating from 233 reviews, which fits the experience described here: generally well received, but not perfect for everyone. The strongest praise focuses on the friendly captain, clear explanations, solid boat, and the chance to see a turtle directly beneath the glass floor. The main cautions involve boarding from the water, exhaust fumes, and boats crowding around turtles.

Who will enjoy this boat trip most

I would recommend this outing to you if you want a short, affordable introduction to the coast around Laganas. It suits swimmers, couples, families, and anyone who prefers an organized route over planning several stops alone.

It is especially useful early in a Zakynthos stay because it gives you a quick look at the marine park, Keri Caves, Turtle Island, and Marathonissi. You can then decide which parts deserve more of your time later, if your plans allow.

You will probably enjoy it less if you need guaranteed wildlife sightings, dislike shared group activities, or want long periods at one location. It is also a poor match if boarding from the water is difficult for you. Wheelchair users should not book this activity.

Come prepared for a wet, open-air outing. Wear swimwear, bring food and drinks, leave large bags behind, and keep your phone protected from splashes. If you want a drink or ice cream, save room in your plan for the Marathonissi stop.

Timing, comfort, and small practical matters

The three-hour duration is one of the tour’s strengths. You get a meaningful amount of time on the water without sacrificing a full day in Zakynthos. Since the exact starting times depend on availability, check the schedule before you arrange other plans.

The boat has both a sundeck and shaded seating. That makes the ride more comfortable for different preferences, but you should still prepare for sun exposure. The information does not specify onboard food, drinks, toilets, or a maximum group size, so do not assume those facilities or a small private-group atmosphere.

The crew speaks English, Greek, and Italian. The skipper is part of the included service, and the boat ride includes explanations about the route and surroundings. One particularly positive account praised a captain who explained everything clearly, which is useful on a trip where the scenery and wildlife can pass quickly.

Free cancellation is available up to 24 hours before departure, and you can reserve now and pay later. The trip must be booked at least 24 hours ahead, so this is not an ideal last-minute choice. Those terms give you some flexibility, but the booking deadline still matters.

Should you book the Laganas turtle tour?

Book it if you want an affordable three-hour combination of turtle spotting, cave scenery, and swimming. The glass-bottom boat adds interest during the ride, and the route covers several places that would be awkward to visit independently in one short outing.

Go in with realistic expectations. You may see a turtle, possibly at very close range beneath the boat, but you may also see only one or none. You should also expect a shared wildlife setting where multiple boats can gather around a sighting.

For me, the best reason to book is the overall mix: three swimming opportunities, Marathonissi Beach, and a chance to see caretta caretta for $29. The best reason to skip it is if animal welfare concerns around boat crowding or the water boarding process would outweigh the fun.

FAQ

How long is the Laganas boat trip?

The trip lasts three hours.

What places does the boat visit?

The route includes Laganas Bay, the Keri Caves area, Turtle Island, and Marathonissi Beach.

Will I definitely see a loggerhead turtle?

No. The activity includes turtle spotting, but a sighting is not guaranteed.

Are swimming stops included?

Yes. Swimming stops are included near the Keri Caves, Turtle Island, and Marathonissi Beach.

Can I buy food or drinks during the trip?

You can buy a drink, snack, or ice cream on Marathonissi. It is the only place during the trip where refreshments are available for purchase.

Can I bring my own food and drinks?

Yes. You can bring your own food and drinks. Large bags and luggage are not allowed.

Where do I meet the boat?

Meet on the beach in Laganas by the Yotomu Laganas Boat Trip sign. Look for the provider’s table and beach umbrella.

Is the tour suitable for wheelchair users?

No. The activity is not suitable for wheelchair users, and boarding requires walking several metres into the sea.