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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)

11 Offers with the Best Prices 2025/2026
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Popular Options
Locations
Activity
Categories
Included services
Ideal for
Languages
Duration
Full Glass Bottom Boat Trip to Marathonisi Caves with Turtle Spotting from Rent All Mania Zante.NewRent All Mania Zante
Full Glass Bottom Boat Trip to Marathonisi Caves with Turtle Spotting
Rent All Mania Zante
Starting from: Keri
3 hours
Free cancellation
Hotel pickup available
Hotel pickup available
From
60 €
Check availability
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 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, Laganas, Kalamaki
3 hours
Free cancellation
Hotel pickup available
4.8(43)
Hotel pickup available
From
25 €
Check availability
Glass-Bottom Boat Trip to Keri Caves from Agios Sostis with Turtle Spotting from Happy Days Zante .Happy Days Zante
Glass-Bottom Boat Trip to Keri Caves from Agios Sostis with Turtle Spotting
Happy Days Zante
Starting from: Alikanas, Kalamaki, Agios Sostis
5 hours
Free cancellation
Hotel pickup available
Hotel pickup available
From
35 €
Check availability
People Watching a Turtle on Turtle Spotting Boat Trip to Turtle Island and Keri Caves from Michael Travel Zakynthos.Michael Travel Zakynthos
Glass-bottom Boat Trip to Turtle Island and Keri Caves with Turtle Spotting
Michael Travel Zakynthos
5.0(3)
Starting from: Argasi
3 hours
5.0(3)
From
25 €
Check availability
Boat with glass-bottom from VIP Turtle Spotting Boat Trip to Turtle Island and Keri Caves from Michael Travel Zakynthos.Michael Travel Zakynthos
Luxury Boat Trip to Turtle Island and Keri Caves with Turtle Spotting
Michael Travel Zakynthos
4.7(3)
Starting from: Argasi
3 hours
4.7(3)
From
25 €
Check availability
Semi Private Sunset Boat Trip to Cameo, Marathonisi & Mizithres Island from Best of Zante Boats.Best of Zante Boats
Semi Private Sunset Boat Trip to Cameo, Marathonisi & Mizithres Island
Best of Zante Boats
5.0(1)
Starting from: Laganas
3 hours
Free cancellation
Hotel pickup available
5.0(1)
Hotel 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, Laganas, Kalamaki
6 hours
Free cancellation
Hotel pickup available
5.0(1)
Hotel pickup available
From
600 €
Check availability
Private Boat Trip to Marathonisi, the Keri Caves & Laganas Beach from Sunwave Cruises Zakyntos.Sunwave Cruises Zakyntos
Private Full-day Boat Trip around Zakynthos with Snorkeling & Turtle Spotting
Sunwave Cruises Zakyntos
Starting from: Tsilivi (Planos)
7 hours
From
580 €
Check availability
Private Boat Trip to Marathonisi, the Keri Caves & Laganas Beach from Sunwave Cruises Zakyntos.Sunwave Cruises Zakyntos
Private Boat Trip to Marathonisi, the Keri Caves & Laganas Beach
Sunwave Cruises Zakyntos
Starting from: Tsilivi (Planos)
5 hours
From
400 €
Check availability
Sunset Boat Trip to Marathonisi Island, Keri Caves and Mizithres with Swimming from Rent All Mania Zante.NewRent All Mania Zante
Currently not availableSunset Boat Trip to Marathonisi Island, Keri Caves and Mizithres with Swimming
Rent All Mania Zante
Starting from: Keri
3 hours
Free cancellation
Hotel pickup available
Hotel pickup available
View details
Sunset Full Glass Bottom Boat Trip to Marathonisi & Keri Caves with Swimming from Rent All Mania Zante.NewRent All Mania Zante
Currently not availableSunset Full Glass Bottom Boat Trip to Marathonisi & Keri Caves with Swimming
Rent All Mania Zante
Starting from: Keri
3 hours
Free cancellation
Hotel pickup available
Hotel pickup available
View details
Boat Trip to Keri Caves, Mizithres & Shipwreck Beach with Turtle Spotting from Rent All Mania Zante.NewRent All Mania Zante
Currently not availableBoat Trip to Keri Caves, Mizithres & Shipwreck Beach with Turtle Spotting
Rent All Mania Zante
Starting from: Keri
7 hours
Free cancellation
Hotel pickup available
Hotel pickup available
View details
Private Half-Day Boat Trip to Marathonisi Island and Mizithres with Turtle Spotting from Rent All Mania Zante.NewRent All Mania Zante
Currently not availablePrivate Half-Day Boat Trip to Marathonisi Island and Mizithres with Turtle Spotting
Rent All Mania Zante
Starting from: Keri
4 hours
Free cancellation
Hotel pickup available
Hotel pickup available
View details
Private Sunset Boat Trip to Marathonisi Island and Mizithres with Swimming from Rent All Mania Zante.NewRent All Mania Zante
Currently not availablePrivate Sunset Boat Trip to Marathonisi Island and Mizithres with Swimming
Rent All Mania Zante
Starting from: Keri
3 hours
Free cancellation
Hotel pickup available
Hotel pickup available
View details

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

4.8
81 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
43 Reviews
Birgit · Solo travelerDEGermany

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

Boat Rental in Agios Sostis (up to 5 people) - Beginner (25-30 HP) from Traventure Zakynthos.Traventure ZakynthosBoat Rental in Agios Sostis (up to 5 people) - Beginner (25-30 HP)
29 Reviews
Marek CZCzech Republic

Helpful and fair company

A view of Navagio Shipwreck Beach, where My Tours stops for swimming during the boat tour around Zakynthos.My Tours ZakynthosBoat Trip around Zakynthos to Shipwreck & Turtle Island with Swimming
11 Reviews
John · FamilyGRGreece

Very fun for the family, you see the whole the whole island and get three 30 minute swim breaks. Good price and great time.

Popular Boat Tour Providers in Marathonisi (Turtle Island)

Traventure ZakynthosTraventure Zakynthos
181 Reviews
11 Offers
null-null-hero
Free cancellation for all offers
Dirk · FamilyNLNetherlands

The price was reasonable at €10.00 per person. Since the island was incredibly busy, we opted for a short visit. A text message was enough to get picked up again 10 minutes later. Other boats have a more extensive program with sightseeing stops and swimming stops. If you want more freedom, the boat taxi is a great option.

Best of Zante BoatsBest of Zante Boats
132 Reviews
2 Offers
null-null-hero
Free cancellation for all offers
Instant booking confirmation for all offers
Yvonne · CoupleGRGreece

Definitely recommended, very informative, fun and a super enthusiastic and cheerful captain... Dennis is a star!

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

Michael Travel ZakynthosMichael Travel Zakynthos
8 Reviews
5 Offers
Picture of tour in Zakynthos by Michael Travel Zakynthos.
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!

Sunwave Cruises ZakyntosSunwave Cruises Zakyntos
4 Reviews
4 Offers
Our boat in the Ionian Sea seen from above.
Tim · CoupleGRGreece

Friendly and helpful staff. Great condition of the boot. Fair price

Happy Days ZanteHappy Days Zante
3 Reviews
3 Offers
null-null-hero
Free cancellation for all offers
Instant booking confirmation for all offers
Chris · FamilyGBUnited Kingdom

A great trip, small group, excellent driver.

Marathonisi (Turtle Island): All locations

Full Glass Bottom Boat Trip to Marathonisi Caves with Turtle Spotting from Rent All Mania Zante.
Marathonisi Beach

4 offers

Marathonisi (Turtle Island): Similar activities

A picture of a luxurious motor boat during the Private Boat Trip to Turtle Island and Keri Caves with Snorkeling from Mistral Rentals Zakynthos.
Half-Day Trips Marathonisi (Turtle Island)

15 offers

A view of Navagio Shipwreck Beach, where My Tours stops for swimming during the boat tour around Zakynthos.
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Boat with glass-bottom from VIP Turtle Spotting Boat Trip to Turtle Island and Keri Caves from Michael Travel Zakynthos.
Boat Trips with Snorkeling Marathonisi (Turtle Island)

12 offers

Turtle spotted during the RIB Boat Trip to Marathonisi and Keri Caves with Turtle Spotting from Explore Zakynthos.
Sunset Boat Trips Marathonisi (Turtle Island)

4 offers

A view of Navagio Shipwreck Beach, where My Tours stops for swimming during the boat tour around Zakynthos.
Marathonisi (Turtle Island): Boat Trips to Shipwreck Beach

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