how are conch shells formed?

Question

i would like to know how the shell itself is made

Answer 1

According to the folks at Fermi Lab, conch shells are formed in a natural Fibonacci sequence.

"In the simplest form of this sequence, each number is the sum of the previous two: 1, 1, 2, 3, 5, 8, 13, 21 . . . .Fibonacci numbers can be used to characterize certain properties in nature, such as the spiral patterns in the heads of sunflowers. Nature has arranged sunflower seeds without gaps in the most efficient way by forming two spirals. The ratio of these spirals varies from one kind of sunflower to another. A similar double spiral occurs in the Norway Spruce cone with a ratio of 5 scales in one direction and 3 in the other. The pattern of the common larch is 8 to 5, and of the American larch, 5 to 3.
The musical scale is based upon the ratios of 1:2, 1:3, 1:4, etc. The Parthenon of ancient Greece is designed with these very ratios, which are pleasing to the eye and to the ear. The division of the conch shell and the spiral of the snail shell display the same ratios. This progression of ratios can be illustrated as an extension of the Fibonacci sequence."

The shells grow in either a dextral (to the right) or sinistral (to the left) manner. Like other shellfish, they get the chemicals they need (mostly calcium carbonate) to build their shells from the water surrounding them (the chemicals are in solution).

Answer 2

How Are Conch Shells Made

Answer 3

conch produces the solid material that it puts around the mouth of the shell. It is kinda like human nails that just keep growing all the time.