Posts tagged ‘Mantle’

How does a clam make its shell?

If you have ever examined a clam shell, you may have wondered how the shell got bigger as the clam grew.  A clam is born with a shell just the right size for its body.  Inside the protecting shell of the living animal is a fleshy layer of tissue called the “mantle.”

The mantle oozes a limy shell liquid which quickly hardens and becomes part of the shell.  As long as a clam grows, its shell also grows.  The food that a clam eats provides the minerals that form the shell.  The hard shell serves as a clam’s skeleton, and the soft animal inside can never leave it.–Dick Rogers

How do snails get their shells?

Snails usually begin to grow their protective shells before they hatch.  The common garden snail hatches from a tiny round egg.  Hidden under the young snail’s shell is a flap of skin called the mantle.  The mantle oozes a limy liquid that quickly hardens into a shell.

As the snail grows in size, it adds coil after coil to its shell, building from the open end (for mouth) as fast as it needs more from.  The food that is eaten by the snail provides the materials that form the shell.  Without its shell, a snail would have little protection against drying up.–Dick Rogers