Practical Effects
Gloopy, handmade creature effects that aged like weird wine.
Cinematography
Moody seascapes turning paradise into purgatory.

Director
G. M. Kumar
Trivia, insights & behind the scenes
G. M. Kumar reportedly filmed several sea scenes during actual storms when the budget couldn't afford effects.
The film draws heavily from Tamil Nadu coastal folklore about 'kadal kanni' spirits who claim shore-dwellers.