Quantum mechanics is a keystone to understand the propagation of tsunami waves. In this sense, the tsunami has several characteristics, for instance, energy and momentum, besides wave-particle duality. For instance, wave-particle duality is the perception of quantum mechanics that each particle or quantic entity can be partially expressed in terms not only of particles but also of waves. It expresses the incapacity of the classical theories of “particle” or “wave” to absolutely designate the behavior of wave phenomena in quantum-scale.