The most exciting experience you can have during your holiday in Zakynthos. Join us on a 3-hour glass bottom boat excursion through the Zakynthos Marine Park — spot wild Caretta-Caretta sea turtles in their natural habitat, explore the dramatic Keri Caves and swim on the stunning sandy beach of Marathonisi (Turtle Island).
An unforgettable adventure for the whole family.
Departing from Agios Sostis Harbour, this 3-hour excursion takes you through the protected waters of the Zakynthos Marine Park aboard a glass bottom boat — giving you a unique and breathtaking view of the underwater world below, especially when the turtles appear.
Tour Highlights:
🐢 Turtle Spotting
Cruise through Laganas Bay and the Marine Park, where our experienced captain knows exactly where to find the famous Caretta-Caretta sea turtles. Watch them swim gracefully beneath the glass bottom — an experience you will never forget.
🌊 Keri Caves
Sail to the spectacular sea caves of Keri on the southern coastline of Zakynthos. We explore the caves and stop for a refreshing swim in the crystal-clear waters of the wild Oasis Bay.
🏝️ Marathonisi — Turtle Island
We continue to the uninhabited islet of Marathonisi, entering the large sea cave before stopping for a long swim on the beautiful sandy beach. Enjoy free time on the island to relax, swim and soak in the surroundings.
A glass bottom boat has a transparent panel on the floor of the vessel, allowing you to see directly into the sea beneath you. It gives you a stunning underwater view — especially magical when sea turtles appear below.
Our captain has extensive local knowledge and knows exactly where to find the Caretta-Caretta turtles in their natural habitat. While wildlife sightings can never be 100% guaranteed, turtle sightings on this tour are extremely common.
The tour lasts approximately 3 hours, including stops at the Keri Caves, Oasis Bay and Marathonisi Island.
There are three daily departures: 10:00, 13:00 and 16:00. We recommend the morning departure for calmer seas and the best light for turtle spotting.
All departures are from Agios Sostis Harbour in Zakynthos.
Absolutely. This tour is one of the most family-friendly experiences in Zakynthos and is suitable for all ages including young children.
Each boat has a maximum of 23 seats, keeping the experience intimate and enjoyable for everyone on board.
A swimsuit, towel, sunscreen and a fully charged camera or phone — you’ll want to capture every moment, especially the turtles!
Get in touch with our team and we’ll help you plan the perfect Zakynthos experience. Whether you have a question or you’re ready to book, we’re just one click away.
