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Crystal clear waters of Sardinia in one of the best boat trips in Sardinia.
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GRGreeceZakynthos (Zante)Keri

BEST Boat Trips in Marathonisi (Turtle Island)

5 Offers with the Best Prices 2026
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Popular Options
Locations
Activity
Categories
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Ideal for
Languages
Duration
Picture of a girl swimming next to a trutle during the Boat Trip to the Keri Caves with Turtle Spotting with Best of ZanteBest of Zante Boats
Boat Trip to the Keri Caves with Turtle Spotting
Best of Zante Boats
4.8(30)
Starting from: Agios Sostis, Laganas, Kalamaki
3 hours
Free cancellation
Hotel pickup available
4.8(30)
Hotel pickup available
From
10 €
Check availability
Boat Trip to Mizithres & Turtle Island with Turtle Spotting from Traventure Zakynthos.Traventure Zakynthos
Boat Trip to Mizithres & Turtle Island with Turtle Spotting
Traventure Zakynthos
4.8(30)
Starting from: Agios Sostis
4 hours
Free cancellation
Hotel pickup available
4.8(30)
Hotel pickup available
From
30 €
Check availability
Boat Trip from Agios Sostis to the Keri Caves & Turtle Island from Traventure Zakynthos.Traventure Zakynthos
Boat Trip from Agios Sostis to the Keri Caves & Turtle Island
Traventure Zakynthos
4.8(43)
Starting from: Agios Sostis
3 hours
Free cancellation
Hotel pickup available
4.8(43)
Hotel pickup available
From
25 €
Check availability
My Tours glass bottom boat goes to Marathonisi-Island and Keri-Caves.My Tours Zakynthos
Boat Trip to Marathonisi Island and Keri Caves with Turtle Spotting
My Tours Zakynthos
5.0(9)
Starting from: Agios Sostis
3 hours
Free cancellation
5.0(9)
From
18 €
Check availability
A view of Navagio Shipwreck Beach, where My Tours stops for swimming during the boat tour around Zakynthos.My Tours Zakynthos
Boat Trip around Zakynthos to Shipwreck & Turtle Island with Swimming
My Tours Zakynthos
4.8(11)
Starting from: Zante Town
8 hours
Free cancellation
4.8(11)
From
24 €
Check availability

Offers available nearby

What customers love about boat trips in Marathonisi (Turtle Island)

4.8
123 reviews
Boat with glass-bottom from VIP Turtle Spotting Boat Trip to Turtle Island and Keri Caves from Michael Travel Zakynthos.Michael Travel ZakynthosLuxury Boat Trip to Turtle Island and Keri Caves with Turtle Spotting
3 Reviews
Ingeborg · CoupleGRGreece

An incredibly fun boat trip with a great captain. A unique kind of boat with a glass bottom so you could see the turtles swimming beautifully. Dog-friendly!

Boat Trip from Agios Sostis to the Keri Caves & Turtle Island from Traventure Zakynthos.Traventure ZakynthosBoat Trip from Agios Sostis to the Keri Caves & Turtle Island
43 Reviews
Hannelore · CoupleATAustria

There were only four of us on the boat (9:00 tour), and the captain was very nice. Unfortunately, we didn't see any turtles, but it was still great.

Boat Trip to Mizithres & Turtle Island with Turtle Spotting from Traventure Zakynthos.Traventure ZakynthosBoat Trip to Mizithres & Turtle Island with Turtle Spotting
30 Reviews
Jelle · CoupleNLNetherlands

We had booked to go on the glass boat. But because we were there in early May, it was not available yet. So we got to go on a speedboat with 6 others! It was a great experience with a very good experienced guide. 100% worth the money!!

Popular Boat Tour Providers in Marathonisi (Turtle Island)

Traventure ZakynthosTraventure Zakynthos
181 Reviews
11 Offers
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Free cancellation for all offers
Birgit · Solo travelerDEGermany

I highly recommend Traventure Zakynthos; everything went perfectly from start to finish.

Best of Zante BoatsBest of Zante Boats
132 Reviews
2 Offers
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Free cancellation for all offers
Instant booking confirmation for all offers
Alexander · CoupleATAustria

Captain Alexandros was a fantastic and very entertaining tour guide. This tour far exceeded our expectations. We were very surprised that no one else gave the crew any tips...

My Tours ZakynthosMy Tours Zakynthos
34 Reviews
5 Offers
One of the boats of My Tours Zakynthos navigating in the Ionian Sea during a boat trip.
Free cancellation for all offers
Con · CoupleAUAustralia

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

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Picture of a loggerhead sea turtle spotted in the private boat trip to Marathonisi Island and the Keri Caves with turtle spotting with Serene Private Cruises.
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Picture of a girl swimming next to a trutle during the Boat Trip to the Keri Caves with Turtle Spotting with Best of Zante
Caves Boat Trips Marathonisi (Turtle Island)

11 offers

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