 The two are initially antagonistic towards each other and attempt to outsmart or outperform each other by one-upmanship, culminating in a shouting match where each tries to convince the other that their "language" is the proper one, but finally become friends and imitate each other by changing colour and/or minor changes in design, making each other's sounds, and behaving like each other.Quaq Quao swims back to his mother, all the while singing the theme tune in the style of the other creature.He regains his normal appearance just before re-encountering his mother.