The film adheres to strict heteronormative structures. The plot centers on the established romantic union of Ariel and Eric, with no non-cisnormative identities present.

Melody seeks autonomy, moving away from the protected child trope. However, female characters operate within a standard maternal and paternal framework.

Casting leans toward a traditional Western aesthetic. Human characters appear homogeneous, and the mermaid characters lack diverse ethnic metaphors or race-bent casting.

The story reinforces the importance of the nuclear family and parental guidance. It concludes by restoring traditional order and familial reconciliation.

There are no visible or invisible disabilities portrayed. The narrative does not utilize neurodivergence or physical disability for character development.