Crustacés et coquillages is a fresh French comedy film with numerous surprise turnarounds and about the tolerance of a family of four. The family spend an idealistic summer vacation together where each of the family members gets involved in a new or old relationship.
| Actor | Role |
|---|---|
 Valeria Bruni TedeschiBéatrix | Béatrix |
 Gilbert MelkiMarc | Marc |
 Jean-Marc BarrDidier | Didier |
 Jacques BonnafféMathieu | Mathieu |
 Édouard CollinMartin | Martin |
 Romain TorresCharly | Charly |
 Sabrina SeyvecouLaura | Laura |
| YYannick BaudinMichaël | Michaël |
| JJulien WeberSylvain | Sylvain |
| SSébastien CormierLaura's New Friend | Laura's New Friend |
| MMarion RouxBilliard Player | Billiard Player |