Spy Kids 2: Island of Lost Dreams (2002) on Netflix

Juni and Carmen are on a mission to search for a mysterious island where they encounter 2 of their competitors. There they meet a scientist who accidentally created the curious creatures with mixed features of normal animals. Both of them have to destroy a powerful object (which could disable all electrical signals and gadgets) that, till then, kept the island from being detected and thus prevent it from reaching wrong hands and ultimately save the world!