Boat Trip from Agios Sostis to the Keri Caves & Turtle Island
4.9()
Activity
Motorboat
Languages
English, Greek
Included
Pickup
Minimum age
No age restrictions
Meeting place
Agios Sostis
At our stand in the port of Agios Sostis (Laganas 290 92, Greece).
Free cancellation with full refund up to 24 hours before the start of the activity
Details
Enjoy a few hours on the water and let yourself be enchanted by the treasures around Zakynthos on our boat trip to the Keri Caves and the island of Marathonisi! We start in the port of Agios Sostis and the first thing we do is look for some Caretta Caretta turtles that live in Laganas Bay. As soon as we see some, you can take photos of these rare animals. Here we put great emphasis on the rules that the national park has set in order to protect the turtles.
The next highlight of our tour are the Keri Caves. These are special rock formations that form beautiful caves and arches. Our boat is the perfect size to pass through one of the arches. We will then cruise along the coves and caves so that you can take some nice photos as a souvenir. Have your snorkelling gear ready, because after that we will go to another amazing spot: Marathias Beach, which is famous for its thermal waters! The view of the sea tunnel with its deep blue water and white beach will take your breath away. Here we can make a swimming stop and go for a swim together in the beautiful water.
Our last stop is Marathonisi Island, also called Turtle Island. It got its name from the breeding beach of the Caretta Caretta turtles, which lay and bury over 1,000 eggs here every year. Here we pass the caves of the island before we come to the sandy beach. Once again, you have time to cool off in the water or explore the island! If you wish, you can also stay longer on the island and contact us later so that we can pick you up again and bring you back to Zakynthos.
Highlights
- Turtle spotting in Laganas Bay
- Swimming stops at Marathias Beach and Turtle Island
- Visit to the Keri Caves
Departure & Return
We meet at the port of Agios Sostis 30 minutes before departure. If you are arriving by car, there is ample free parking at the port. We also offer a free hotel transfer from Laganas and Kalamaki, which can be arranged after booking. If you live further away, we can arrange a transfer for an extra charge (to be paid on site). After about 3 hours, we return to Agios Sostis.
Characteristics of the boat
- Number of passengers: depends on the season (max. 45)
- Sun-protected area
- No restrooms
- Accessible to strollers and wheelchairs
- Pets allowed (on the boat, not allowed on the turtle island due to National Marine Park rules)
Included services
- Hotel pick up service from Laganas and Kalamaki
Additional services
- Pickup from outside Laganas and Kalamaki
With over 93% of reviewers giving this turtle spotting boat trip in Zakynthos five stars, it's a clear favorite for couples and families. Guests consistently praise the small group sizes, which make for a more personal experience. The crew receives high marks for being the "Best skipper ever", friendly, and skilled at navigating the caves and finding turtles. While most found the trip well-organized with timely hotel pickups, a few noted minor confusion with return trips or a lack of amenities on Marathonisi island. The tour offers fantastic swimming stops in crystal-clear water, making for a memorable day out.
AI generated from the text of customer reviews
Popular mentions
Crew21
Organization13
Swimming stops11
Boat10
Landscape7
Safety2
Value for money2
Sylvia · FamilyGreece · August 2026
Small boat, plenty of time to swim, and the skipper did his best to locate the turtles for us.
Translated from Dutch
Valeria Italy · August 2026
beautiful excursion, excellent organization, we booked at the last minute the night before and they managed to find a solution that could accommodate us very quickly
Translated from Italian
Nadine France · July 2026
Great trip!
Showing 1 - 3 out of 47 reviews
Offers by Traventure Zakynthos194 Reviews11 Offers
Is hotel pickup available and how do I request it?
A free hotel transfer from Laganas and Kalamaki is included. This can be arranged after booking. If you are staying further away, a transfer can be arranged for an extra charge, which is to be paid on site.
Can I bring my dog or pet?
Yes, you can bring your pet on the boat. However, please note that pets are not allowed on Turtle Island (Marathonisi) due to National Marine Park regulations.
How long is the boat trip?
The boat trip lasts approximately 3 hours.
Can I go swimming during the trip?
Yes, the trip includes swimming stops at Marathias Beach and on Marathonisi (Turtle Island).
Am I guaranteed to see turtles?
The tour includes a search for the Caretta Caretta turtles that live in Laganas Bay. The crew is experienced in spotting them while respecting the national park rules to protect the animals. However, as they are wild animals, sightings cannot be guaranteed.
Where is the meeting point?
The meeting point is at the port of Agios Sostis. Please be there 30 minutes before the scheduled departure time.
Is the boat accessible for wheelchairs and strollers?
Yes, the boat is accessible to strollers and wheelchairs.
Are there restrooms on the boat?
No, there are no restrooms on the boat.
How many people can be on the boat?
The number of passengers depends on the season, with a maximum of 45 people on board.
From
25 €
The checkyeti guarantee1-click cancellation7 days/week support100% price clarity
The activity Boat Trip from Agios Sostis to the Keri Caves & Turtle Island by Traventure Zakynthos is available every day, from August 20, 2026 through October 15, 2026. Each day offers 3 start times between 9:00 and 15:00. Sessions last 3 hours and are offered as group activities. Prices start from €25.00 per person.
Greece · August 2026
Italy · August 2026
France · July 2026
