Length:
1:32
The mantle deposits calcium into a protein matrix to make the shell. The inner crystalline structure prevents cracks from breaking the shell, and the mantle continually repairs the shell from the inside.
The mantle deposits calcium into a protein matrix to make the shell. The inner crystalline structure prevents cracks from breaking the shell, and the mantle continually repairs the shell from the inside.
The complex structure of the molluscan shell prevents cracks from destroying the shell.