A Custom of the Sea [Un usage de la mer]
- Release Year
- 2021
- Runtime
- 52m
- Genres
- Documentary
- Directed By
- Fabrizio Polpettini

Porto Maurizio, where the director, who lives in France today, grew up, is located on the Ligurian coast. The village is the starting point for a cinematic journey into the past that spans a surprisingly wide arc to a time when Muslim pirates, the corsairs, haunted the Mediterranean and took Europeans as slaves. To this end, the film light-handedly draws from the rich fund of film history and its iconography.