The islet of Marathonisi in Laganas Bay, known as “Turtle Island,” is included in the Marine Park of Zakynthos, and it’s known for its characteristic shape and because it is a vital breeding ground for sea turtles, is one of the lesser-known of the many attractions of the Ionian Sea.
The islet, near the larger island of Zakynthos, is located just off Keri Beach, in Laganas Bay.