An animal's shell is subjected to stress throughout its life, and residual stress can be released and measured as strain. The shape and texture of the shell are advantageous features of design.

Ming is considered the oldest living non-colonial animal ever. She was discovered at 507 years old, according to 2013 ...

Trade in turtle shells is banned by an international agreement to protect the species A man has been arrested after a boat heading for the Welsh coast carrying endangered animal shells was seized.

Most species, however, had coiled shells lined with progressively larger chambers separated by thin walls called septa. The animals constantly grew new shell material as they aged, but the their ...