Grab a group of your nearest and dearest and set sail on this private glass-bottomed boat cruise to the island of Marthonisi, better known as Turtle Island. You'll head out from Laganas Bay, part of the Zakynthos Marine Park which is a protected area where loggerhead turtles nest. Your experienced captain will tell you all about these endangered animals as you try to catch a glimpse of them through the clear bottom of the boat during your three-hour trip. If the weather's on your side, you'll get to have a wander on the uninhabited island and go for a swim. It's like your own private slice of paradise.

This was our favourite part of our honeymoon holiday. The guide was fantastic, very friendly and funny. We even got to see a turtle which was a miracle for the time of year. The caves are beautiful and turtle island was a great place to stop off for a swim. Would definitely recommend this trip and would book again 100%. Exceeded our expectations.

Our hotel rep said I would be ok with the tour. I walk with crutches and foubd I needed a lot of help getting on and off the boat as we launched from the shore, not a jetty.

Prompt collection from the hotel to boat. The captain was fun and very experienced with the boat. Saw a turtle even though we are slightly out of Season .

Tour fantastic. Downside was being moved from 11am departure until midday after the window to cancel had passed, after initial confirmation email of 11am. It was something I had booked to fill our departure day as we had a late flight. The hour delay meant it was cut too fine getting back to the hotel (4.30) and being collected (4.47 - early for a 5.05pm pick up) when I had reckoned on us having at least an hour to shower and change for the flight. I flew home in my sandy swimming costume.

Superbe balade en bateau avec arrêts baignade et plage. Il faudrait juste préciser que la bateau n'est pas à quai et qu'il faut grimper par l'échelle depuis la mer. Ce n'est pas accessible à tous mais c'est une très chouette expérience!

Brilliant communication, no hanging around, great captain made it fun, we found a turtle! 2 swim stops, beautiful caves, super value for money! Perfect last day of holiday.

Why you’ll love this…

This half-day glass-bottomed boat cruise shows off southern Zante's white-cliffed coastline
You'll sail to Marthonisi Island, take a swim and stroll along its white-sand shores
Your skipper will tell you all about local loggerhead turtles as you try to spot them in the wild

Important to know

Bookings under 10 passengers: the boat will be shared with other guestsBookings of 10 passengers or more: the boat will be reserved exclusively for your group
This cruise is available for groups of between 10 and 23 guests
Not suitable for wheelchairs
Not suitable for those with reduced mobility

Cancellation policy

Receive a 100% refund if you cancel up to 1 day before the experience begins.

What’s included

Boat cruise
Insurance
Transport
Swim stops

Booking fee

Good news! No extra fees are applied to this booking.

Pickup points

To see which pickup points are available, check under availability & prices.

Provider

TUI Hellas Travel, Tourism and Airlines SA

What people say about this experience

4.1/5

All reviews are verified

Based on 30 reviews

Review categories

Safety

4.6/5

Service

4.6/5

Staff

5/5

Value for money

4.6/5

All ratings (30)

5 stars (16)

53%

4 stars (9)

30%

3 stars (2)

2 stars (2)

1 star (1)

N
Nathan
Traveled as a couple
September 25, 2026
5
United Kingdom
This was our favourite part of our honeymoon holiday. The guide was fantastic, very friendly and funny. We even got to see a turtle which was a miracle for the time of year. The caves are beautiful and turtle island was a great place to stop off for a swim. Would definitely recommend this trip and would book again 100%. Exceeded our expectations.
S
Sue
Traveled with a group of friends
September 17, 2026
5
United Kingdom
Our hotel rep said I would be ok with the tour. I walk with crutches and foubd I needed a lot of help getting on and off the boat as we launched from the shore, not a jetty.
B
Bev
Traveled as a couple
September 9, 2026
5
United Kingdom
Prompt collection from the hotel to boat. The captain was fun and very experienced with the boat. Saw a turtle even though we are slightly out of Season .
M
Mrs E
Traveled with family
September 1, 2026
5
United Kingdom
Tour fantastic. Downside was being moved from 11am departure until midday after the window to cancel had passed, after initial confirmation email of 11am. It was something I had booked to fill our departure day as we had a late flight. The hour delay meant it was cut too fine getting back to the hotel (4.30) and being collected (4.47 - early for a 5.05pm pick up) when I had reckoned on us having at least an hour to shower and change for the flight. I flew home in my sandy swimming costume.
A
Alex13
Traveled as a couple
October 3, 2026
4.6
France
Superbe balade en bateau avec arrêts baignade et plage. Il faudrait juste préciser que la bateau n'est pas à quai et qu'il faut grimper par l'échelle depuis la mer. Ce n'est pas accessible à tous mais c'est une très chouette expérience!
A
Alex
Traveled as a couple
August 7, 2026
5
United Kingdom
Brilliant communication, no hanging around, great captain made it fun, we found a turtle! 2 swim stops, beautiful caves, super value for money! Perfect last day of holiday.