Zakynthos: Turtles, Marathonisi & Keri Caves Glass-Bottom Boat Tour

About This Experience

The glass-bottom version of the southern circuit, and with nearly 3,000 reviews the calm-water alternative to the speedboats. A specially built glass-bottom boat with a covered seating area leaves from Agios Sostis near Laganas, and the shaded deck is the reason families with small children keep choosing it.

The route crosses the National Marine Park looking for loggerhead turtles — the glass floor gives a second angle when one passes under the hull — then makes a photo stop at Cameo Islet, formed by the 1633 earthquake, before running under the arches of the Keri Caves for a thirty-minute swim in the turquoise water beneath them. The longest stop is Marathonisi, Turtle Island, where you have about an hour to swim off the nesting beach.

Three to three and a half hours with pickup included. Snorkelling gear is not provided, so bring your own; reviewers consistently praise the captains for handling the turtles carefully and for finding them even on busy days.

Highlights

• Turtle spotting through the glass floor in the National Marine Park
• Photo stop at Cameo Islet
• Thirty-minute swim below the arches of the Keri Caves
• About an hour to swim and relax at Marathonisi, Turtle Island
• Covered seating — the family-friendly boat on the south coast

What's Included

• ✓ Hotel or cruise-terminal pickup and drop-off within 10 km of Agios Sostis
• ✓ Glass-bottom boat ticket
• ✓ Boat insurance and safety equipment

Not Included

• Food and drinks
• Snorkelling and swim equipment

What to Bring

• Swimwear and towel
• Snorkelling gear
• Sun hat, sunglasses and sunscreen
• Water and snacks

Good to Know & Caveats

• Turtle sightings are wildlife, not a guarantee, whatever the listing says — most departures do see them
• Only a small part of Marathonisi's beach is open; the rest is a protected nesting zone
• Cave swims depend on the sea state
• Pickup covers accommodation within 10 km of Agios Sostis — Laganas, Kalamaki, Lithakia and around

Meeting Point

Hotel or cruise-terminal pickup within 10 km of Agios Sostis, then the Best of Zante boat centre at the harbour — look for the Best of Zante signs.