Juvenal Marinho dos Passos (born 3 May 1959), better known by the nickname Juca Baleia, is a Brazilian former professional footballer and manager who played as a goalkeeper.
Due to the problems he faced with being overweight (weighed around 120 kg), he gained the nickname "Juca Baleia" (English: Whale).
In 1990 he left folklore to shine at the club that revealed him, Sampaio Corrêa, becoming three-time state champions.
Juca treasures goalkeeper Carlos Gallo's shirt, received as a gift on that occasion.
Juca was coach of Expressinho in the 2014 Second Level conquest, and in the following years he started working at Santa Quitéria.