Marathonisi (aka Turtle Island), an uninhabited island except for sea turtles, is part of the National Marine Park of Zakynthos, which works to protect sea turtles. On the island, there are two beaches: one sandy and one rocky.
Kerì Caves, accessible only by sea with private boats or tourist excursions, develop along the promontory of Marathia Cape, in the South-West area of the island. Along the coast there are many caves which entrances scarcely suffice to get in swimming, others are broad enough to enter directly with a boat..
