Marathonisi (Schildkröteninsel)
Short Description
Explore Marathonisi (Turtle Island), a natural wonder in Zakynthos Marine Park. Spot endangered sea turtles, swim in turquoise waters, and discover untouched beauty accessible only by boat.
Contact Information
Location & Directions
Address: Marathonisi Islet, 29092, Zakynthos
Marathonisi is located in the center of Laganas Bay, just off the southern coast of Zakynthos, accessible only by boat from Laganas, Agios Sostis, or Keri. The islet lies within the Zakynthos Marine Park and is visible from most southern beaches.
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Amenities & Facilities
Opening Hours
Schedule Information
About This Attraction
Welcome to Marathonisi (Turtle Island): A Jewel of Zakynthos
Marathonisi, affectionately known as Turtle Island, is a small, uninhabited islet lying gracefully in the heart of Laganas Bay, on the southern coast of Zakynthos. This enchanting island is renowned not only for its stunning natural beauty—crystalline turquoise waters, white-sand beaches, and mysterious sea caves—but as a vital breeding ground for the endangered loggerhead sea turtle, Caretta caretta.
Natural Significance and Conservation
Marathonisi forms part of the Zakynthos Marine Park, a protected area established to conserve the delicate ecosystem and particularly the nesting grounds of the loggerhead turtles. From May to October, female turtles emerge at night to lay eggs in the soft sands of Marathonisi's southern beach. Strict conservation measures are in place: access to certain parts of the beach is restricted during nesting season, and visiting is only possible by day. The island's role as a sanctuary offers visitors a unique opportunity to observe these magnificent creatures in their natural habitat without disturbing their life cycle.
How to Visit: Getting There & Experiences
Reach Marathonisi by renting a boat, joining an organized eco-friendly cruise, or hopping on a water taxi departing from Laganas, Agios Sostis, or Keri. Boat trips frequently circle the islet for turtle spotting before docking at the sandy beach, where you'll find inviting shallow waters ideal for swimming and snorkeling. Adventurers can explore sea caves on the northern edge of the island and marvel at the vibrant underwater life. As there are no permanent amenities on Marathonisi, the island retains its authentic, untouched feel.
What to Expect: Tranquility, Wildlife, and Scenic Beauty
Step ashore and feel time slow down. Most visitors spend two to three hours swimming in emerald waters, sunbathing on soft sand, or snorkeling amid rock formations. With luck, you'll spot a Caretta caretta gliding through the sea. The islet is home to rare Mediterranean flora and breeds other bird species, making it a true paradise for nature lovers and photographers. In high season (July-August), the island can get busy—plan an early morning or late afternoon visit for more tranquility.
Tips and Responsible Tourism
Bring water, snacks, sunscreen, and your snorkeling gear—there are no shops or restaurants. Take only memories, leave only footprints: avoid disturbing turtle nests marked by protective cages. Guided eco-tours offer valuable insight into local wildlife and conservation. Note that dogs are not allowed, and fires or camping are strictly prohibited to protect the fragile ecosystem.
Nearby Attractions
Combine your visit with nearby natural wonders: the Keri Caves (spectacular for boat trips and snorkeling), Cameo Island (famous for weddings and beaches), and Laganas Beach. Zakynthos Marine Park's visitor center offers further educational information about conservation on the island.
Perfect For
Visitor Tips
- Visit early in the morning or late afternoon to avoid crowds and midday heat.
- Bring your own water, snacks, sunscreen, and snorkeling equipment, as there are no shops on the island.
- Respect the wildlife—do not touch or disturb turtle nests (usually marked with cages) and keep noise to a minimum.
- Guided eco-tours provide valuable insight into turtle conservation and local ecosystems.
- Wear water shoes as the sandy areas can be mixed with pebbles, especially closer to the caves.
Busy Seasons
Peak season is from late June through August, with the highest crowds in July and early August. Visit in May, early June, September or October for fewer crowds and a more peaceful atmosphere.