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Several boats near the coast during a boat trip to Keri Caves.
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GRGreeceZakynthos (Zante)Keri

Boat Trips from Marathonisi (Turtle Island) to Keri Caves

21 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 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, Laganas, Kalamaki
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, Laganas, Kalamaki
3 hours
Free cancellation
Hotel pickup available
4.8(43)
Hotel pickup available
From
25 €
Check availability
Boat Trips around the Island of Zakynthos with Swimming from Dimosthenis K Zakynthos.Dimosthenis K Zakynthos
Boat Trip around the Island of Zakynthos to Shipwreck Beach with Swimming
Dimosthenis K Zakynthos
Starting from: Zakynthos (Zante)
8 hours
Free cancellation
From
20 €
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
Turtle spotted during the RIB Boat Trip to Marathonisi and Keri Caves with Turtle Spotting from Explore Zakynthos.Explore Zakynthos
RIB Boat Trip to Marathonisi and Keri Caves with Turtle Spotting
Explore Zakynthos
Starting from: Vasilikos
4 hours
Free cancellation
Drinks available
Drinks available
From
40 €
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
Viewpoint of Mizithres on Zakynthos Day Trip incl. Turtle Island, Keri Caves and Olive Press Museum from Michael Travel Zakynthos.Michael Travel Zakynthos
Minivan & Boat Trip to Turtle Island and Keri Caves with Turtle Spotting
Michael Travel Zakynthos
5.0(1)
Starting from: Argasi
6 hours
5.0(1)
From
55 €
Check availability
Turtle Swimming in water During Glass-bottom Boat Trip to Turtle Island & Cameo Island with Turtle Spotting from Dali Tours Zakynthos.Dali Tours Zakynthos
Glass-Bottom Boat Trip to Turtle Island & Cameo Island with Turtle Spotting
Dali Tours Zakynthos
Starting from: Zakynthos (Zante)
5 hours
Free cancellation
Hotel pickup available
Hotel pickup available
From
30 €
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
Private Boat Trip to Turtle Island and the Mizithres Rocks from Traventure Zakynthos.Traventure Zakynthos
Private Boat Trip to Turtle Island and the Mizithres Rocks
Traventure Zakynthos
5.0(21)
Starting from: Laganas, Agios Sostis, Kalamaki
3 - 5 hours
Free cancellation
Hotel pickup available
5.0(21)
Hotel pickup available
From
300 €
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
Bird's-eye view of the motorboat used in the private boat trip around Zakynthos with turtle spotting with Serene Private Cruises.Serene Private Cruises Zakynthos
Private Boat Trip around Zakynthos with Turtle Spotting
Serene Private Cruises Zakynthos
5.0(1)
Starting from: Kavos Psarou
8 hours
Free cancellation
Drinks available
5.0(1)
Drinks available
From
700 €
Check availability
Showing 1 - 16 out of 21 offers

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

4.8
134 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
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.

Taxi Boat to Turtle Island from Agios Sostis from Traventure Zakynthos.Traventure ZakynthosTaxi Boat to Turtle Island from Agios Sostis
16 Reviews
Lavinia · FamilyITItaly

We had a great time. The people were kind, cheerful, and punctual.

My Tours glass bottom boat goes to Marathonisi-Island and Keri-Caves.My Tours ZakynthosBoat Trip to Marathonisi Island and Keri Caves with Turtle Spotting
9 Reviews
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

Popular Boat Tour Providers in Marathonisi (Turtle Island)

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

Nice trip beautiful nature

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
Aneta · FamilyGBUnited Kingdom

Amazing experience recommended . Very professional go for it

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.
Elselien · CoupleNLNetherlands

Great day! The program is well put together, an effort is made to find turtles. We swam wonderfully and enjoyed the beautiful surroundings. And... we also saw a turtle, despite it not being the right season. If you have the chance, sit at the front of the boat, wonderful! The captain makes an effort for his passengers, despite the fact that we were of course number 20,000!

Explore ZakynthosExplore Zakynthos
3 Reviews
3 Offers
View on the bay in Zakynthos by Explore Zakynthos.
Free cancellation for all offers
Mascha · FamilyDEGermany

Great tour and very nice crew. Also very good with kids!

Happy Days ZanteHappy Days Zante
3 Reviews
3 Offers
null-null-hero
Free cancellation for all offers
Instant booking confirmation for all offers
Laura · CoupleCHSwitzerland

Good guide and everything went well :)

Marathonisi (Turtle Island): All locations

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

5 offers

Marathonisi (Turtle Island): Similar activities

Private Boat Trip to the Keri Caves and the Shipwreck from Traventure Zakynthos.
Private Boat Tours Marathonisi (Turtle Island)

23 offers

Private Boat Trip to the Turtle Island & Keri Caves with Turtle Spotting from My Local Sea Zakynthos.
Beach Boat Trips Marathonisi (Turtle Island)

22 offers

The boat used for Boat Rental in Keri (up to 7 people) with Fun@Sea Zakynthos.
Day Trips Marathonisi (Turtle Island)

15 offers

Boat with glass-bottom from VIP Turtle Spotting Boat Trip to Turtle Island and Keri Caves from Michael Travel Zakynthos.
Half-Day Trips Marathonisi (Turtle Island)

15 offers

Private Boat Trip to Turtle Island and the Mizithres Rocks from Traventure Zakynthos.
Island Trips Marathonisi (Turtle Island)

15 offers

Private Boat Trip to the Keri Caves and the Shipwreck from Traventure Zakynthos.
Caves Boat Trips Marathonisi (Turtle Island)

11 offers

Full Glass Bottom Boat Trip to Marathonisi Caves with Turtle Spotting from Rent All Mania Zante.
Glass-Bottom Boat Trips Marathonisi (Turtle Island)

4 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

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