Kotychi lagoon is located in Ilia region, NE of the town of Lechena, while the coastal forest, the wetland of Strofylia, is further to the north, in the Achaia region. It is basically a network of lagoons, lakes, marshes and forests along the northwest coast of the Peloponnese.

Kotychi lagoon has shallow waters (30-40 cm) and freshwater. It is framed by reed beds on the coastal part, while the waterfront is defined by a long narrow sandy island, in the middle of which is the channel connecting the lagoon with the sea. It covers an area of approximately 800 acres, the largest in the Peloponnese. It is characterized by high biodiversity; the fauna is of high ecological interest, as the lagoon is located on the southwestern edge of the western migration route of many migratory birds.

Strofylia pine forest is located near the lagoon, covering a coastal forest strip 15 km long and 0.5-3.5 km wide. Due to its importance for the subsistence and reproduction of many aquatic birds, the area is protected by the Ramsar Convention (Convention on Wetlands of International Importance, especially as Waterfowl Habitat) and is included in the network of Special Protection Areas of the European Union