Greece is renowned for its abundance of islands and islets, each boasting breathtaking natural beauty, crystal-clear waters, and stunning beaches. From the sun-drenched shores of the Aegean to the lush coastlines of the Ionian, the country is home to some of the most picturesque seaside destinations in the world. However, among these remarkable locations, two islands stand out—not for their beauty alone, but for their mysterious ability to vanish and reappear daily.
This astonishing phenomenon occurs just off the coast of Eretria, a charming seaside town in Evia, southeast of Chalkida. Located directly across from the northern shores of Attica, in the South Euboean Gulf, these twin islands seem to defy logic as they disappear beneath the waves and re-emerge within hours. Unlike other natural occurrences that happen only under specific conditions, this event takes place every single day, making it one of Greece’s most fascinating natural mysteries.
The Science Behind the Disappearing Islands
At first glance, it might seem like these islands are sinking into the sea before magically rising again. However, the explanation for this strange occurrence is found in the movement of water in the Chalkida Strait. This narrow passage is famous for its unusual tidal currents, which change direction multiple times a day due to the gravitational pull of the moon and the sun, as well as the shape of the surrounding seabed.
As a result, the water levels around the twin islands fluctuate significantly, creating the illusion that they disappear and reappear. If you were to observe them using a drone or take aerial photos at different times of the day, you would notice that in the morning, they appear to be firmly in place. By the afternoon, however, they have seemingly vanished, only to return to visibility the next day.
This mesmerizing natural event is a true wonder to witness in person. Visitors eager to experience it can make a short trip to Eretria, which is conveniently located just an hour’s drive from Athens. The town’s stunning coastal views and relaxed atmosphere make it an ideal destination for travelers looking to combine natural beauty with a touch of mystery.
Exploring the Islands and Islets of Eretria
In addition to the disappearing twin islands, Eretria is surrounded by several other stunning islets, each offering its own unique charm. One of the most famous is Pezonisi, also known as the “Island of Dreams.” This enchanting little island is connected to the mainland by a small bridge, allowing visitors to walk across and explore its lush landscapes and pristine beaches. Pezonisi is a favorite getaway for locals and tourists alike, offering a peaceful retreat surrounded by the gentle waves of the South Euboean Gulf.
Another nearby islet, Agia Triada, is equally captivating. Known for its tranquil beauty and untouched nature, Agia Triada is a perfect spot for those seeking a quiet escape. Its crystal-clear waters and serene environment make it an excellent location for swimming, sunbathing, and relaxation.
Beyond Eretria, the coastline of Evia is dotted with numerous other small islands, each with its own character and appeal. Among them are:
- Lichades Islands – Often referred to as the “Maldives of Greece” due to their turquoise waters and white sandy shores, these islets are a paradise for nature lovers and beachgoers.
- Petalioi Islands – A collection of private and unspoiled islands offering breathtaking scenery and secluded beaches.
- Myrto – A small, rocky island known for its stunning underwater caves, making it a popular spot for diving and snorkeling.
- Prasouda – A tiny, picturesque island covered in lush greenery, perfect for nature enthusiasts.
- Pontikonisi – Meaning “Mouse Island” in Greek, this charming islet is a hidden gem waiting to be explored.
A Must-Visit Destination for Nature Lovers
Eretria and its surrounding islands offer an extraordinary mix of natural beauty, history, and unique geographical phenomena. Whether you’re drawn by the mystery of the disappearing islands, the scenic landscapes, or the inviting waters, this region of Greece has something to offer every traveler.
For those seeking adventure, the opportunity to witness the disappearing islands firsthand is a once-in-a-lifetime experience. But even beyond this fascinating natural wonder, Eretria is a destination full of surprises, offering crystal-clear waters, picturesque coastal walks, and a gateway to some of the most beautiful islets in Greece.
So, if you’re planning a trip to Greece and want to explore a truly magical location, be sure to add Eretria and its disappearing islands to your itinerary. You may just find yourself captivated by the incredible beauty and mystery of this enchanting corner of the Aegean.
By Orestis Karipis
