Buzz
Snails often capture the attention of children playing outdoors. Fortunately for them, their hard shells offer a protective barrier against curious kids and predators alike. But are these creatures born with their shells, or do they need to find or grow them over time?
Snails are actually born with shells, though they may not look like what you would expect. They emerge from eggs that are either buried under the soil or, in the case of marine snails, placed in safe areas like near rocks. It typically takes about two to four weeks for the eggs to hatch and the baby snails to emerge, fully equipped with their shells.
The shell of a young snail, also known as a protoconch or 'initial shell,' is clear and soft. Due to its delicate nature, the newly-hatched snail must consume plenty of calcium to help strengthen its shell. Typically, a baby snail starts by eating the shell of the egg it came from, which provides a handy source of nourishment.
As the snail grows, its shell expands with it. The snail generates new shell material, similar to the soft substance of its initial protoconch, which causes the shell to enlarge and gradually harden. The portion of the shell it was born with eventually becomes the center of the spiral once the snail and its shell reach full maturity. As the snail ages, the number of spirals, or whorls, in its shell increases, along with the rings inside. These rings, much like tree rings, can be used to estimate the snail’s age.
