Boat Trip to Marathonisi Island and Keri Caves with Turtle Spotting
5.0()
Activity
Motorboat
Languages
English, Polish
Minimum age
No age restrictions
Meeting places
Agios Sostis
At the port of Agios Sostis in front of our boat
Agios Sostis - Zakynthos - Transfer
We arrange a pick-up near your place of accommodation after you completed the booking (return included).
Free cancellation with full refund up to 24 hours before the start of the activity
Details
Embark on our boat trip to Marathonisi Island and Keri Caves, and immerse yourself in an unforgettable turtle-filled journey. Experience the breathtaking beauty of Greek caves, swim along the picturesque coast of the turtle island, and, above all, take the opportunity to spot turtles in the bay of Laganas.
Our journey will start in the port of Agios Sostis from where we will depart south-west to the popular Keri Caves. Here we will stay for around 20 minutes so that you can enjoy a swim in the crystal clear turquoise waters of the cave complex. The next stop is the Marathonisi Island. The turtle shaped island is actually also the Caretta-Caretta's turtle main nesting spot on Zakynthos and on top of all you can enjoy its beautiful sandy beaches. We will stay here for about 50 minutes.
Then we will navigate through the bay of Laganas for 1 hour, where you can spot for Caretta-Caretta turtles. Unless weather conditions do not allow it, you will for sure see some of these wonderful creatures in this time span. After you have filled your camera with some great holiday pictures throughout this 3-hour trip, we will return to the port of Agios Sostis. Highlights
- Boat trip on glass-bottom boat
- Visit of Keri Caves and Navagio Shipwreck Beach
- Swimming stop at the Marathonisi Island
- Turtle spotting in the Bay of LaganasItinerary
- Harbour of Agios Sostis
- Keri-Caves (20-minutes swimming stop)
- Marathonisi-Island (50-minutes swimming stop)
- Harbour of Agios SostisHow to get there
We meet at the harbour in Agios Sostis in front of our boat 15 minutes before departure.
You can park free of charge at the harbour of Agios Sostis. Please make sure to arrive early as it might be difficult to find space in high-season.
If you choose the transfer option, a bus will take you from selected meeting points to the port of Agios Sostis, where you can board the boat. At the end of the tour, we will bring you back to the meeting point. Pick-up is available from the following locations: Agios Sostis, Laganas, Kalamaki, Argasi, Zakynthos Town, Tsilivi and Tragaki. The exact pick-up time will be arranged after the booking is completed. Characteristics of the boat
- Number of passengers: 78
- Glass-Bottom-Boat
- Sun-protected area
- Restrooms Included Services
- Transfer
- Guided Tour in English & PolishBring along
- Swimwear
- Sun lotion, sun hats
- Snorkeling equipment
- Waterproof swimming shoes
- Fully charged camera
- Drinks & food (if you wish)
- Cash or CardGood to know
- Program might change depending on the weather conditions
- Payment at our bar is possible with cash or card
- You can bring your own food and drinks if you wish
- Accessible to wheelchairs and strollers
- Pets are allowed if they are taken on board in animal transport boxes
- Please send us the names of all the participants of the activity
Great tour at the end of September, although most of the turtles were already migrating, we were able to marvel at one.
The swim stops were wonderful.
Translated from German
Con · CoupleAustralia · September 2025
We absolutely loved it
It was one of our highlights of our holidays in Zakynthos
Swimming in crystal clear waters in caves
Absolutely stunning and marathonisi Island just gorgeous
Stefania · FamilyItaly · August 2025
Well-organized tour. Excellent support throughout the day.
Thank you for the wonderful experience.
Translated from Italian
Showing 1 - 3 out of 9 reviews
Offers by My Tours Zakynthos38 Reviews5 Offers
Is hotel pickup available and how do I request it?
Yes, a transfer service is available from Agios Sostis, Laganas, Kalamaki, Argasi, Zakynthos Town, Tsilivi and Tragaki. The exact pick-up time and location will be arranged after booking.
Can I bring my dog or pet?
Yes, pets are allowed on board as long as they are in a suitable transport box.
Can I bring my own food & drinks?
Yes, you are welcome to bring your own food and drinks on board.
How long is the boat trip?
The total duration of the boat trip is 3 hours.
Are there any swimming stops during the tour?
Yes, there are two swimming stops. You will have about 20 minutes to swim at the Keri Caves and about 50 minutes at Marathonisi Island.
Is it guaranteed that I will see turtles?
During the 1-hour trip through the bay of Laganas, you will almost certainly see Caretta-Caretta turtles, unless the weather conditions do not allow it.
Is the boat accessible for wheelchairs and strollers?
Yes, the boat is accessible to both wheelchairs and strollers.
Where is the meeting point for the tour?
The meeting point is at the harbour in Agios Sostis, in front of the boat. Please be there 15 minutes before the scheduled departure time.
Is there parking available near the meeting point?
Yes, you can park for free at the harbour of Agios Sostis. It is recommended to arrive early, as finding a space can be difficult during high season.
From
19 €
The checkyeti guarantee1-click cancellation7 days/week support100% price clarity
The activity Boat Trip to Marathonisi Island and Keri Caves with Turtle Spotting by My Tours Zakynthos in Agios Sostis is available every day, from August 20, 2026 through September 30, 2026. Each day offers 6 start times between 8:00 and 15:00. Sessions last 3 hours and are offered as group activities. Prices start from €19.00 for kids and €29.00 for adults.
Germany · September 2025
Australia · September 2025
Italy · August 2025
