Lagoon Kotychi is close to Lechaina, Strofylia’s forest, and it is protected by the Ramsar Convention, such as Prokopos lagoon, and the lakes-marshes of Lamia and Papa. It is also included in the Natura 2000 network. Lagoon Kotychi is the biggest lagoon in Peloponnese, known for its rich production in fish such as seabasses (Dicentrarchus labrax), grey mullets (Mugil cephalus), gilt-heads (Sparus aurata) and eels (Anguila anguila). It is one of the most important lagoons in Greece, since it is used as a stopover place by migratory birds. There are rare birds such as cormorants (Phalacrocorax carbo), common coots (Fulica atra), little egrets (Egretta gularis), glossy ibises (Plegadis falcinellus), pelecans (Pelecanus), wild-hens, and others.

The lagoon’s region constitutes a mosaic of habitats with sandy beaches, brush lands, forests, small lakes, sand dunes: there are limestone rocks that are a refuge to birds of prey. Lagoon Kotychi is one of the few natural areas that remains untouched from human intervention not only in Greece but also in Europe.