3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting in Zakynthos
Zakynthos, Greece

3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting

Outty Ranking 69 4.3 · 70 traveler reviews3 hoursFrom $12

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September 2026

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Adults

Age 13 and over

2

Children

Age 12 and under

0

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From, per person$12
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Outty Ranking

69/100

Solid Choice. Our proprietary evaluation. How we score

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

  1. 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

  2. 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

  3. 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

3 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting in Zakynthos, photo 23 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting in Zakynthos, photo 33 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting in Zakynthos, photo 43 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting in Zakynthos, photo 53 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting in Zakynthos, photo 63 Hours Marathonissi Island Tour, Keri Caves and Turtles Spotting in Zakynthos, photo 7

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.

Traveler sentiment (30% weight)55
Review evidence (18% weight)72
Booking momentum (14% weight)67
Value for money (12% weight)100
Listing quality (10% weight)89
Local standing (8% weight)18
Booking flexibility (8% weight)100

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?

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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?

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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?

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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?

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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?

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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?

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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?

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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?

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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?

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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?

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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?

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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?

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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.

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