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
28 reviews
Total reviews and rating from Viator & Tripadvisor
Excellent trip just the...
Donna W,
Jul 29, 2025
- Viator
5.00Excellent trip just the right length of time at each place. Knowledgeable fun captain. Great seeing the turtles
Wonderful experience
Theresa K,
Jul 11, 2025
- Viator
5.00Best Captain/Guide! He treated nature, especially the carettas, with great respect. Was very funny and caring!
Great value
Nicholas S,
Jul 5, 2025
- Viator
5.00Great value from pickup at hotel to the glass bottom boat trip. Driver was very pleasant and the skipper Dennis was very funny and all round great guy with plenty of information on surrounding areas
I give it a 5 star really a top tour was on my own even
Leroy P,
Jun 15, 2025
- Viator
5.00Experience: Blue Caves of Zakynthos Tour Trip During my holiday on Zakynthos one of the highlights was definitely the tour to the Blue Caves. We left early in the morning from the port of Agios Nikolaos with a small boat, which gave a more intimate experience than the larger tourist boats. As soon as we got near the caves, the view became truly spectacular. The rock formations along the coast were rugged and impressive, with colors ranging from white and gray to deep orange. But the real magical moment came when we entered the caves: the sunlight reflected off the water in such a way that it created a bright blue glow – almost unreal beautiful. The name “Blue Caves” is really not an exaggeration! The captain made us stop at several places to swim. The water was crystal clear and perfectly cool on a hot day. We snorkeled around the caves and saw all kinds of fish, and even some sea urchins on the rocks. What I also really appreciated was the explanation given by the guide about the geology of the caves and the history of the island. You noticed he was proud of his island and his enthusiasm was contagious. Tips for other travellers: • Go early in the day to avoid crowds and have optimal sunlight in the caves. • Bring swimming gear, an underwater camera and water shoes. • Choose a smaller boat for a more personalized experience and access to narrower cave entrances. Final verdict: An unforgettable experience not to be missed while on Zakynthos. The combination of natural beauty, adventure and relaxation makes this a perfect day trip.
Excellent trip to turtle island and Keri caves
Paul K,
Jun 11, 2025
- Viator
5.00Today we joined the ship of captain Alexander (the great) and what an excellent tour guide he is. He showed us the wonderful turtles and maneuvered his boat professionally so we could spot the turtles and take pictures. Afterwards we saw the amazing Keri caves which was spectacular and worthwhile to see. We recommend this trip.
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Operated by Happy Days Zante