Kyparissia Bay is located on the west coast of the Peloponnese and, for the longest part, is one of the most undisturbed coastal ecosystems in Greece. In the marine area of the bay and on its 44 km long sandy beach, nests one of the largest populations of loggerhead sea turtle Caretta caretta in the Mediterranean Sea.
An average of 780 nests are made each year on a beach 10km long in the southern part of bay, between the estuaries of Neda and the village of Kalo Nero. A significant number of nests, however, are also found in the northern part of the Bay, which lies north of the estuary of Neda until Alphios river.
The great ecological value of this coastal area is recognized by the presence of underwater sea grass meadows of Posidonia sp., the sea turtle nesting beaches, three protected sand dune types, some magnificent clusters of thermo-Mediterranean vegetation and endemic pine forests.
There are three Natura 2000 sites Kyparissia Bay: GR2550005 "THINES KYPARISSIAS (NEOCHORI - KYPARISSIA)", GR 2330005 «THINES KAI PARALIAKO DASOS ZACHAROS, LIMNI KAIAFA, STROFYLIA, KAKOVATOS», and GR 2330008 THALASSIA PERIOCHI KOLPOU KYPARISSIAS: AKR. KATAKOLO - KYPARISSIA»).
The program for the systematic recording of ARCHELON's reproductive activity in South Kyparissiakos began in 1984. Today the program includes the following activities.
The volunteers of ARCHELON live in an organized camp in Gianitsochori, Ilia. In the nearby areas, it is worth seeing ancient Olympia, the ancient temple of Apollo in Pygala, ancient Messina, the town of Pylos and Kalamata, the birds in the Gialova lagoon and walking to the springs of Neda.
In 2017, over 8,000 visitors were informed by ARCHELON in the South Kyparissia Bay.