A whale drifts through the deep blue, singing at intervals — each call spawns a ring at its head that expands outward and fades as it travels, visualizing a sound wavefront. Real whale vocalizations are extremely low-frequency and can propagate for tens to hundreds of kilometers through water, letting whales communicate, navigate, and find each other across ocean basins. The rings here fade over their lifetime just as real sound pressure dissipates with distance.