HomeBoat TripsZakynthos: Turtles, Marathonisi & Keri Caves Speedboat Tour

Zakynthos: Turtles, Marathonisi & Keri Caves Speedboat Tour

4.6 (3,297 verified reviews)

About This Experience

With more than 3,200 reviews this is the southern equivalent of the big Blue Caves days: a speedboat from Agios Sostis that covers the whole National Marine Park circuit in three hours. Hotel pickup is included, which for Laganas and Kalamaki means a twenty-minute transfer to the quay.

The boat crosses Laganas Bay looking for loggerhead turtles — the captains approach slowly and give way, and most departures see at least one — then passes Cameo Islet and runs west under the cliffs of Cape Keri, threading the arches the crews call the Kamares and nosing into the Keri Caves for photographs. The first swim is at a small private beach in the caves area; the last is at Marathonisi, Turtle Island, with fifty minutes to swim off the nesting beach.

There is an 18:00 departure that turns the same route into a sunset cruise with a complimentary drink, and several reviewers rate that the best version. The boat is a fast open speedboat, so it is not the one for anyone prone to seasickness or with a back problem; the glass-bottom boats from the same harbour are the calmer choice.

Highlights

  • Look for loggerhead turtles in the National Marine Park of Zakynthos
  • Speed through the arches under Cape Keri and into the Keri Caves
  • Swim off Marathonisi, Turtle Island, and at a private beach in the caves area
  • Pass Cameo Islet, formed by the 1633 earthquake
  • An 18:00 departure runs the same route into the sunset with a drink

What's Included

  • ✓ Hotel pickup and drop-off
  • ✓ Three-hour speedboat cruise with an experienced captain and crew
  • ✓ Turtle spotting in the marine park
  • ✓ Swim stops at Marathonisi and the Keri Caves area

Not Included

  • Food and drinks

What to Bring

  • Swimwear and towel
  • Sun hat and sunscreen
  • Water
  • Camera or phone in a dry bag

Good to Know & Caveats

  • Turtle sightings are wildlife, not a guarantee, although most departures see at least one
  • Captains may change the route for weather; you are notified in advance if a departure is rescheduled
  • Cave entry depends on the sea state — on rougher days the boat holds at the cave mouths
  • Pickup is from your hotel or a point up to a five-minute walk away, confirmed within 24 hours before the trip
  • This is a fast open speedboat: not suitable for pregnant travellers, people with back problems or anyone prone to seasickness

Not Suitable For

  • Pregnant women
  • People with back problems
  • Wheelchair users
  • People prone to seasickness

Meeting Point

Hotel pickup or a nearby pickup point, then Agios Sostis harbour near Laganas — look for the two big blue Zante Mare flags and white umbrellas on the quay.

What Travelers Say

Rated 4.6/5 by 3,297 verified GetYourGuide travelers.

We had a great sunset tour with Zante Mare! Our captain Christos and his brother definitely knew what they were doing and steered the boat superbly and told us a lot. The 3 swimming stops were all really nice, but I especially liked the last stop when the sun had already set and we could watch the moon from the caves. Here we were also shown a narrow tunnel to another cave that we would never have discovered otherwise. At first, we looked for turtles on the coast off Laganas, but we didn't see any directly. However, I thought that was a good thing, because many boats around a turtle unnecessarily stress the animal, and these turtles are endangered anyway and are a protected species. We were then shown an old turtle that lives in the harbor of Agios Sostis and is fed there by fishermen. That was cool to see, but I would have loved the tour even without the turtles!

— Liz, August

We were picked up on time by the driver and taken to the location. After a short wait, the large group was divided among the individual boats. Right at the beginning, we were able to see a turtle. Our tour guide was super nice, and there was plenty of time to take pictures and go swimming. A great experience, and I can recommend it without reservation. I can also recommend the €15 surcharge for the transport, as it is significantly cheaper than taking a taxi.

— Wilko, August

A nice day trip in the sun on the lake... we saw dolphins and the different shades of the beautiful water, as well as a wonderful cave system

— Taina, August

Frequently Asked Questions

Will we definitely see turtles?

Almost every departure does, but they are wild animals in a protected bay and the captains keep their distance, so nothing is guaranteed. Mornings and calm days give the best odds.

Does the boat go inside the Keri Caves?

Yes, in normal sea conditions the speedboat enters the caves and passes through the arches under Cape Keri. On rough days it holds at the entrances.

Where does it leave from?

Agios Sostis harbour, just west of Laganas. Pickup from your accommodation or a nearby point is included and takes about twenty minutes from the main resorts.

Is the sunset departure worth it?

Reviewers who took the 18:00 boat rate it highly: the same route, a complimentary drink, and the last swim as the sun goes down. Turtle sightings are slightly less likely late in the day.

Is it suitable for children?

Yes for confident swimmers and anyone happy on a fast boat. Families wanting a gentler ride should look at the glass-bottom boats from the same harbour.