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Several boats visiting a cave at the shore during a boat trip.
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GRGreeceZakynthos (Zante)Keri

Caves Boat Trips Marathonisi (Turtle Island)

3 Offers with the Best Prices 2026/2027
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Popular Options
Locations
Activity
Categories
Included services
Ideal for
Languages
Duration
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
4.9(48)
Starting from: Agios Sostis
3 hours
Free cancellation
Pickup available
4.9(48)
Pickup available
From
25 €
Check availability
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.Serene Private Cruises Zakynthos
Private Boat Trip to Marathonisi Island & the Keri Caves with Turtle Spotting
Serene Private Cruises Zakynthos
Starting from: Kavos Psarou
4 hours
Free cancellation
Drinks available
Drinks available
From
310 €
Check availability
Private Boat Trip to the Keri Caves and the Shipwreck from Traventure Zakynthos.Traventure Zakynthos
Private Boat Trip to the Keri Caves and the Shipwreck
Traventure Zakynthos
5.0(1)
Starting from: Agios Sostis
6 hours
Free cancellation
Pickup available
5.0(1)
Pickup available
From
600 €
Check availability

Offers available nearby

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

4.9
49 reviews
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
48 Reviews
Valeria ITItaly

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

Private Boat Trip to Turtle Island and the Mizithres Rocks from Traventure Zakynthos.Traventure ZakynthosPrivate Boat Trip to Turtle Island and the Mizithres Rocks
22 Reviews
Volkan · FamilyNLNetherlands

Great boat trip! The Mizithres Rocks are a must-see if you visit Zakynthos!

Boat Rental in Agios Sostis (up to 5 people) - Beginner (25-30 HP).Traventure ZakynthosBoat Rental in Agios Sostis (up to 5 people) - Beginner (25-30 HP)
31 Reviews
Panagiotis · FamilyGRGreece

Very friendly staff, informative and helpful.

Popular Boat Tour Providers in Marathonisi (Turtle Island)

Traventure ZakynthosTraventure Zakynthos
201 Reviews
11 Offers
null-null-hero
Free cancellation for all offers
Dom · CoupleGBUnited Kingdom

Great trip to the island, staff very friendly and professional. Highly recommend.

Serene Private Cruises ZakynthosSerene Private Cruises Zakynthos
10 Reviews
5 Offers
The astonishing Navagio Beach with the famous shipwreck from 1980, visited with Serene Private Cruises Zakynthos.
Free cancellation for all offers
Eirik · CoupleNONorway

Great captain, good information during the trip. Good stops where we could take a swim. Loots of caves! Good sunset spot

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