Zakynthos Half Day Tour and Cruise Turtle Island and Keri Caves
Overview
Available languages
Mobile ticket
Set sail on a mesmerising journey across Zakynthos’ turquoise waters aboard our glass-bottom boat — a unique window into the island’s vibrant marine life. Whether you join us from the charming Agios Sostis Harbour or opt for a hassle-free pickup from your hotel you’re in for a day packed with natural wonders and unforgettable experiences. Cruise the sparkling Ionian Sea on a glass-bottom boat and discover Zakynthos’ natural wonders. Spot sea turtles, swim in crystal-clear waters, and explore the stunning, Keri Caves.
Choose a convenient meeting point or hotel pickup from major resorts. Enjoy incredible views above and below the waves, and don’t forget your camera — and snorkel!
Highlights:
• Watch for loggerhead turtles in their natural habitat
• Swim in the turquoise waters of Turtle Island & Keri Caves
• Marvel at marine life through the boat’s glass bottom
• Capture amazing photos of Zakynthos’ coastline
Perfect for couples, families, solo and nature lovers!
Additional Info
Service animals allowed
Infants are required to sit on an adult’s lap
Suitable for all physical fitness levels
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
What‘s Included
Liability Insurance
Air-conditioned vehicle
Glass-Bottom Boat Ticket
Guide/Captain
Bottled water
Snacks
Meeting and Pickup
Pickup points
Select a pickup point
What To Expect
Laganas
Our specially designed glass-bottom boat gives you a clear view of the marine life and sea floor, letting you connect with nature even if you stay dry.
Keri Caves
Cruise along dramatic limestone cliffs and slip into a dreamscape of electric blue water at the breathtaking Keri Caves. These hidden gems are only accessible by boat, making the experience feel like your own private paradise.
Options
St. Sostis port meeting point.
Zakynthos Half Day Tour and Cruise Turtle Island and Keri Caves
Pickup included
Reviews
50 reviews
Total reviews and rating from Viator & Tripadvisor
Jess and chrissie zante october 2025 highly recommend!
L5027SUjessp,
Oct 24, 2025
- Review from Tripadvisor
5.00Myself and my bestie were made to feel so welcome by friendly staff. Beautiful island beautiful tour would highly recommend any of the tours.
Nice tour, cozy and professional captain.
Vacation22289058707,
Oct 17, 2025
- Review from Tripadvisor
5.00We had a very nice morning. What a relief that there were only a small group of us! Paying an extra tenner is more than worth it if I saw the other overcrowded boats. The reception was fine and within a few minutes we were lucky enough to see a turtle. Then we set sail for the caves, there was swimming time and we went on a trip to the turtle island. Alexander is a very knowledgeable captain, friendly and sociable, but also professional and above all very agile with the boat. Incredibly clever with what precision he steers the boat!
Good experience
Uzma M,
Oct 10, 2025
- Review from Viator
4.00It was nice tour of some islands and caves. We swam in one location. We saw one turtle though… as it’s off season so disappointed but no one’s fault. The one we did see though… 6boats were circling him for a look. Felt bad but tourists gotta see I guess. The beach we spent time at was ok. Overall ok experience.
Turtley enjoyable ....
triciah181,
Oct 8, 2025
- Review from Tripadvisor
5.00Coach arrived on time as planned, modern, clean and comfortable. There were seats for 11 passengers which was a good size and opportunity to meet and chat with other tourists. Transfer at port to our boat was well organised and we were soon on our way after being shown the 'lazy' turtle who had stayed behind in the port. I think everyone on our boat got sight of him lifting his head out of the water. Boat captain was very jolly and good humoured. Atmosphere on boat was good... we stopped at Keri caves sufficiently long enough for good photography opportunities and a short break at small pretty cove was included for those who wanted a dip in the blue waters. The last stop was 45 mins at an island beach where we could swim, picnic and chill. All in all a good trip and thoroughly recommend.
Not very animal friendly
Evelyn V,
Oct 7, 2025
- Review from Tripadvisor
3.00The appreciation is not to the person who carries out the boat trip, but more the masses. Almost 10 boats charging at 1 turtle we eventually found no longer fit in this time. Wouldn't book it so fast anymore. The first stop for swimming was nice. The 2nd at the beach was not necessary by us.
Amazing experience
rebeccauk33,
Oct 2, 2025
- Review from Tripadvisor
5.00Amazing! Captain Denis was a dream - funny and informative made the most of the trip and helped us all get perfect photos. He worked hard to get us turtle sightings and we managed not one but two! Had the perfect length of time to relax on the beach and also had a 20% discount at the food/drink cart on the beach. Boat wasn’t packed and plenty of room. The boat ride was so smooth and the timing of everything was amazing. We did a similar tour in another part of Zante the day before this one (at the same price) and this one was miles better! Highly recommend
Great trip
MISS W,
Oct 2, 2025
- Review from Tripadvisor
5.00Our Captain Denis was amazing explaining everything we saw. Went above and beyond to ensure we saw some turtles even though it was out of season, we saw 3.
Great excursion!
damienbL2186WI,
Sep 25, 2025
- Review from Tripadvisor
5.00A great experience to do with family/friends or even solo. The captain knows how to set the Mood and pay attention to all passengers (even those with reduced mobility). The activities carried out are as recruited in the advertisement. The details of the care were clear and respected. I highly recommend this excursion, value for money at the top.
Captain Denis was the best!
Emanuel M,
Sep 15, 2025
- Review from Tripadvisor
5.00The captain was amazing, his name was Denis, he was very funny, very nice, and very informative. He told us everything that is going to happen before it happened. We had a 20 minute swimming stop at Keri Caves, we had an hour on Marathonisi. And most important, we saw a sea turtle, Captain Denis was very informed about how they feel, he knew if it was stressed or not, he kept going around her, but out of her way so she wouldn't feel scared, he told us if it was coming up and kept telling us exactly where it was. Very organized, funny, nice guy and a nice tour!
Special cruise to see turtles and Keri Caves
JanelleH540,
Sep 7, 2025
- Review from Tripadvisor
5.00The cruise yesterday was wonderful with an excellent lady captain who was very skilful navigating the cliffs of the Keri Caves. We were lucky to see a Loggerhead turtle just as we were leaving the dock which was very special. The Keri Caves were spectacular in colour and dimension. Finally Marathonissi or Turle Island was also lovely with many nests on the beach. There are also small boat vendors selling cools drinks and lunch items/snacks. We took the 12noon cruise and were placed on the larger boat with double deck which meant there was lots of space to move and see everything. The other cruise boat was much smaller with the same company. Not sure the difference. The crew was fabulous as well.
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Operated by Happy Days Zante