
3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting
Pick your date
Highlighted days have spots open. Grey days are sold out or not running.
September 2026
Loading live availability
Who is going?
Adults
Age 13 and over
Children
Age 12 and under
Select a highlighted day to see live departure times and the exact price for your group.
Free cancellation up to 24 hours before. Same price on Viator, Outty earns a commission.
Traveler rating
4.3/5
Based on 70 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.
Quick answer
Is 3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting worth booking?
3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting is a 3-hour experience in Zakynthos, Greece, from $12 per person. It scores 69 out of 100 on the Outty Ranking, which we label “Solid Choice”, based on a 4.3/5 rating across 70 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.
- Outty Ranking
- 69 / 100
- Rating
- 4.3/5 (70)
- Duration
- 3 hours
- From
- $12 per person
This is one of the most beautiful tour here in Zakynthos because it allows you to see all the most beautiful places in the National marine park of Zakynthos. Admire the Caretta Caretta turtles, Keri caves area, large c
What you get
- Glass bottom
About this experience
This is one of the most beautiful tour here in Zakynthos because it allows you to see all the most beautiful places in the National marine park of Zakynthos. Admire the Caretta Caretta turtles, Keri caves area, large cave on the turtle island and enchanting sandy beach of Marathonisi islet Comfortable boats with limited numbers of guests and seating for everybody. Only 23 seats, the boats all have shaded seating, rear sundeck and glass bottom. We suggest that you buy some drinks and snacks in Laganas before departure. On the island of Marathonisi you can buy snacks, drinks and ice cream. All the other stages of this excursion do not have the possibility of refreshment..
What's included
Included
- Glass bottom
What you'll see and do
Enchanting Island of Marathonisi islet Stop for Swimming at beautiful Sandy Beach. Marathonissi is a small private island in the turtles’ bay close to Limni Kerì’s beach. Until the second world war the island was lived, today it has neither inhabitants nor buildings. It is now one of the areas where the CARETTA CARETTA turtles go to breed.
60 minutes here
Keri Caves
First Stop will be at Keri Caves - Amazing place First Stop for Swimming Kerì Caves, accessible only by sea with private boats or our excursions, develop along the promontory of Marathia Cape, in the South-West area of the island. Along the coast there are many caves which entrances scarcely suffice to get in swimming, others are broad enough to enter directly with a boat. It is very easy to reach the caves that are surmounted by cliffs where the sea is very deep and as such reachable.
40 minutes here
Laganas
Turtle Spotting: Starting with Turtles Spotting just out in the Laganas Bay The Caretta Caretta Turtle is a specimen still living in the Mediterranean and it is possible to meet it there since it spawns along the beaches of the Laganas Gulf. They can have considerable dimensions (the largest weights 140 kg. and measures circa 120 cm whereas the smallest measures 80 cm.) but, in spite of this, they are very fast. Thanks to the big anterior and the stiff posterior fins they can reach 30km/hour and so protect themselves from possible dangers.
45 minutes here
Where it starts and ends
Meeting point
Zakynthos
YOTOMU NAUTILOS MEETING POINT 37°42’54.6”N 20°51’51.1”E We Meet under the NAUTILOS Flag Gate CLOSE 20 minutes before Tour departure Time - If you arrived later Captain discretion to let you in NO CALL or Message for late Arrival You can contact us ONLY by Whatsapp here +306980780697
Hotel pickup
No pickup: everyone meets at the start point.
Ends at
YOTOMU NAUTILOS MEETING POINT 37°42’54.6”N 20°51’51.1”E We Meet under the NAUTILOS Flag Gate CLOSE 20 minutes before Tour departure Time - If you arrived later Captain discretion to let you in NO CALL or Message for late Arrival You can contact us ONLY by Whatsapp here +306980780697
Before you book
- Cancellation
- For a full refund, cancel at least 24 hours before the scheduled departure time.
- Languages
- el, en
- Ticket
- Mobile Only
- Runs on
- Every day
- Group size
- Up to 15 travelers per booking
- Operated by
- YOTOMU
Know before you go
- Service animals allowed
- Infants are required to sit on an adult’s lap
- Suitable for all physical fitness levels
Photos






Good to know
- Duration
- 3 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- All ages
- Availability
- Bookable today
- Runs on
- Every day
- Price range
- $12 to $25
- Hotel pickup
- No pickup, meet at start point
- Booked in 30 days
- 25
- Verdict
- Solid Choice
Why this scores 69
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting: questions travelers ask
Practical detail on this experience, plus the wider planning questions for Zakynthos.
How much does 3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting cost?
+
Prices start at $12 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Zakynthos usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.
How long does 3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting take?
+
Plan for about 3 hours from start to finish, not counting travel to the meeting point. Most travelers leave another 30 minutes on either side so the rest of the day in Zakynthos is not rushed.
Is 3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting worth it?
+
It holds an Outty Ranking of 69 out of 100, which we label "Solid Choice". That score blends traveler sentiment (4.3/5 across 70 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable last minute in Zakynthos, and how flexible the cancellation terms are.
Can I cancel or reschedule 3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting?
+
Yes. Cancel free up to 24 hours before the start time for a full refund. Inside that window the booking is non-refundable, and no-shows are not refunded.
Is 3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting suitable for kids and families?
+
Yes, all ages are welcome. Families should still weigh the 3-hour running time, and strollers are easier on the earlier, quieter departures.
How far in advance should I book 3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting?
+
Around 25 people booked this in the last 30 days, so popular slots go early. Two to three weeks ahead is comfortable in shoulder season, while summer weekends and holidays in Zakynthos can sell out a month out. Same-day spots do open up when other travelers cancel, so it is worth checking if you are already in town.
What should I bring or wear?
+
Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in Zakynthos and add a light layer if any part of the 3-hour experience runs outdoors or after sunset.
Where does 3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting start and how do I get there?
+
The exact meeting point and directions are on your voucher once you book, and they sit in central Zakynthos within reach of public transport. Arrive 15 minutes early: late arrivals are treated as no-shows by most operators.
What are the best things to do in Zakynthos?
+
On Outty we rank every Zakynthos experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Half-Day Greek Cooking Class of Zakynthian Culture with Lunch, Zakynthos Turtle Tour Small Group Turtle Spotting & Turtle Island, Zakynthos : One day small group tour to Navagio beach Blue Caves & top view. The city page groups everything into most popular, highest reviewed, last minute and family-friendly so you can build a day around what actually delivers.
When is the best time to visit Zakynthos?
+
Booking patterns follow the same curve: prices and queues climb in peak weeks, while shoulder season gives you better availability on the top-ranked experiences and more room to change plans.
How many days do you need in Zakynthos?
+
Three full days covers the headline sights without sprinting. A workable rhythm is one anchor experience each morning, such as this one, an unhurried afternoon in a single neighborhood, then a food or nightlife booking in the evening. Five days lets you add a day trip outside the city.
Do I book through Outty or through the operator?
+
Outty ranks and explains the experiences, then hands you to Viator to complete the booking with the operator directly. The price is the same as booking on Viator yourself, and Outty earns an affiliate commission on the referral, which is how the rankings stay free to read.
Ready to lock in your spot?
Pick a date, choose your group, and see the exact price for 3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting.
Pick your date




