A protective Device for the breeding of animal, such as the breeding of Fish or Shellfish, Mussels, which comprises at least an internal Cage that can be placed in a Water Body, and is composed of a Network, this jauta is sized in the present with a width of Malta (16 ') of such a man Was that the Animals to be raised are retained within such a Network.This preference surrounded by at least one external Cage and is Spaced from the last produced a network made of Thin wires and / or strands, the Mesh width (26) of the external Cage is greater than that of the Inner Cage and thus ensures that Predators cannot The damaged Network (16) of the Inner Cage from the outside.DISPOSITIVO PROTECTOR CONTRA DEPREDADORES ACUÁTICOS PARA LA CRÍA DE PECES, MEJILLONES O MOLUSCOS QUE COMPRENDE AL MENOS UNA JAULA QUE CONSTA DE UNA RED PARA LA CRIANZA DE ORGANISMOS ACUÁTICOS Y AL MENOS UNA JAULA EXTERNA QUE RODEA DICHA JAULA LA QUE ESTÁ CONFORMADA POR UNA MALLA DE ALAMBRES INDIVIDUALMENTE DOBLADOS HELICOIDALMENTE Y UNA ESTRUCTURA TRIDIMENSIONAL TIPO COLCHÓN.