Wavelength Change During Sound Transition

A sound wave travels through different media at varying speeds, which can affect various physical phenomena, including Doppler shifts and resonance. Consider a sound wave emitted by a stationary source that travels through air and then enters water. The frequency of the sound wave remains constant during this transition, but the speed and wavelength of the sound wave change due to the different properties of the two media.

Suppose a listener is positioned at a distance from the source in both mediums. How does the transition from air to water impact the perceived wavelength of the sound wave at the listener's location?