Most small and empty univalve seashells encase spiral columns of air space that can be resonated to produce sound. The shell, Terebra Turritella, commonly known as the Screw Shell or Unicorn Shell, encases a conical helix air space. Experts report that Its shape has remained the same since the Jurassic Period.
The first eight whorls, counting from the shell opening (aperture) to the pointy end (apex), are hollow. After that the whorls are solid to the shell apex. A whorl is one revolution of the spiral. If one draws a lengthwise center line on the shell, one spiral revolution begins on the line and ends on the adjacent whorl line, either above or below the starting point.
The air space inside one spiral revolution of the Terebra Turritella shell increases or decreases in volume logarithmically. Diatonic musical notes also increase or decrease in pitch logarithmically. In the case of the Terebra Turritella shell the spiral logarithmic air space contains the logarithmic diatonic musical scale potential. Another way of saying that is the diatonic musical scale is dormant within the first eight whorls of theTerebra Turritella shell.
The Terebra Turritella shell releases the diatonic musical scale of notes when five pitch holes are drilled into whorls 2, 3, 4, 6 and 8, following the lengthwise axis line of the shell. The logarithmic shape of the shell’s air space corresponds to and contains the diatonic scale of notes. In fact, an octave and a half of diatonic and chromatic notes are available.
No mathematical measurements or calculations are required or necessary to create this musical instrument. All other musical instruments in the world, capable of releasing the pentatonic, diatonic and chromatic scales of notes, require the use of mathematical calculations or measurements in their construction.
The Turritella Shell Flute is a primal and natural musical instrument. I consider it to be the Mother of Music and Musical Instruments. It’s spiral shape, along with the five pitch holes, releases an octave and a half of pentatonic, diatonic and chromatic notes. The shell contains all the mathematical calculations required to make this happen. Why a snail created this shell shape is a matter of conjecture.