Isahaya Bay
Isahaya Bay '' is a bay within the Ariake Sea, located northwest of the Shimabara Peninsula in Nagasaki Prefecture, Japan. Its surface area is about, with a maximum depth of.
In 1986, the governor of Isahaya began an 235 billion-yen reclamation project of a tidal flat by closing off part of the bay for agricultural purposes with it being completed in 2008. However, the reclamation project was met with a series of protests from local fishermen, who said that the closing of the bay had caused changes in currents along with mass pollution within the bay, which had affected their catches.