Hello Down There (1969)

In the heart of the ocean's undulating waves, marine scientist Fred Miller pioneers the construction of a revolutionary underwater abode. However, when the tycoon bankrolling Miller's venture threatens to pull the plug, Miller gambles his family's everyday life to prove the practicality of his aquatic innovation. His family, a colorful ensemble, includes his aqua-averse wife and their two children who are the pulsating heart of a budding rock and roll band. The band's charismatic lead singer and energetic drummer also dive into the underwater adventure. As they adapt to life beneath the sea, they must navigate the murky waters of corporate rivalry, as a competing engineer vies for the businessman's favor by proposing to exploit the ocean floor's resources. Amidst this aquatic drama, their unique music echoes through the ocean, catching the attention of a record producer who promptly books them for a television appearance. This unexpected break sends the kids on a daring mission to traverse the ocean's depths to reach the surface, adding yet another layer of excitement to their undersea exploits.

Hello Down There is a comedy movie featuring Tony Randall and directed by Ricou Browning.

It is possible to buy Hello Down There on Amazon Video, Apple TV, Google Play Movies, Microsoft Store and YouTube.