identify at least five specific details which show elements of culture?

The description of Santiago's hut is consistent with fishing huts in Cuban culture at the time.

There are references to Catholicism and The Virgin Mary throughout the story.

Santiago keeps a picture of the Virgen del Cobre in his hut.

Santiago's understanding that hard work makes a man. 

Santiago's romantic interpretation of cultural gender stereotypes. The sea, for example, is a woman with many moods.