The fog which appears soon before the American soldier shows up, symbolises Sadao and Hana’s predicament and the the lack of clarity concerning what they should do with the man on the beach. It might also symbolize secrecy. Considerations of safety compel them to keep the man’s presence in their home a secret. They’re faced with the dilemma of whether or not to save the man’s life. On the one hand, sheltering an enemy in their home, especially an enemy prisoner, could endanger the entire family. On the other hand, they feel incapable of throwing a wounded man back into the sea, where he would certainly die. For the same reason, they hesitate to turn him over to the police.