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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)

10 Offers with the Best Prices 2026
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Locations
Activity
Categories
Included services
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 Zante
Just booked
Best of Zante Boats
Boat Trip to the Keri Caves with Turtle Spotting
Best of Zante Boats
4.8(32)
Starting from: Agios Sostis, Laganas, Kalamaki
3 hours
Free cancellation
Pickup available
4.8(32)
Pickup available
From
10 €
Check availability
Boat Trip from Agios Sostis to the Keri Caves & Turtle Island from Traventure Zakynthos.
Just booked
Traventure Zakynthos
Boat Trip from Agios Sostis to the Keri Caves & Turtle Island
Traventure Zakynthos
4.8(46)
Starting from: Agios Sostis
3 hours
Free cancellation
Pickup available
4.8(46)
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
Pickup available
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.
Just booked
Michael Travel Zakynthos
Glass-bottom Boat Trip to Turtle Island and Keri Caves with Turtle Spotting
Michael Travel Zakynthos
5.0(4)
Starting from: Argasi
3 hours
5.0(4)
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
30 €
Check availability
Semi Private Sunset Boat Trip to Cameo, Marathonisi & Mizithres Island from Best of Zante Boats.
Just booked
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
Pickup available
5.0(1)
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
330 €
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
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
Full Glass Bottom Boat Trip to Marathonisi Caves with Turtle Spotting from Rent All Mania Zante.Rent All Mania Zante
Currently not availableFull Glass Bottom Boat Trip to Marathonisi Caves with Turtle Spotting
Rent All Mania Zante
Starting from: Keri
3 hours
Free cancellation
Pickup available
Pickup available
View details

Offers available nearby

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

4.9
87 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
46 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

Taxi Boat to Turtle Island from Agios Sostis from Traventure Zakynthos.Traventure ZakynthosTaxi Boat to Turtle Island from Agios Sostis
19 Reviews
Viktória · Solo travelerSKSlovakia

Amazing 🥰

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)
30 Reviews
Bram · CoupleNLNetherlands

Great guys and easy to rent a boat. We had a almost new boat with enough power and easy to manage.

Popular Boat Tour Providers in Marathonisi (Turtle Island)

Traventure ZakynthosTraventure Zakynthos
188 Reviews
11 Offers
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Free cancellation for all offers
Bram · CoupleNLNetherlands

Great guys and easy to rent a boat. We had a almost new boat with enough power and easy to manage.

Best of Zante BoatsBest of Zante Boats
133 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...

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
9 Reviews
5 Offers
Picture of tour in Zakynthos by Michael Travel Zakynthos.
Olga · FamilyNLNetherlands

Good experience for good price!

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
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Free cancellation for all offers
Instant booking confirmation for all offers
Connie · FamilyATAustria

I highly recommend Happy Days Zante. Great value for money, the company organises to pick you up from a convenient location in a small, clean charter bus. The boat was not over crowded and the sites visited by boat were amazing. This trip didn’t feel overly touristy, perfect for those who want to enjoy the sites without the big crowds. The stop over at the olive tree was also beautiful. We were then taken back to the original pick up spot. Amazing day!

Marathonisi (Turtle Island): All locations

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.
Marathonisi Beach

3 offers

Marathonisi (Turtle Island): Similar activities

Turtle Swimming in water During Glass-bottom Boat Trip to Turtle Island & Cameo Island with Turtle Spotting from Dali Tours Zakynthos.
Half-Day Trips Marathonisi (Turtle Island)

14 offers

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

13 offers

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.
Boat Trips with Snorkeling Marathonisi (Turtle Island)

12 offers

Bird's-eye view of the motorboat used in the private boat trip around Zakynthos with turtle spotting with Serene Private Cruises.
Marathonisi (Turtle Island): Boat Trips to Shipwreck Beach

3 offers

Semi Private Sunset Boat Trip to Cameo, Marathonisi & Mizithres Island from Best of Zante Boats.
Sunset Boat Trips Marathonisi (Turtle Island)

3 offers

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