African shell craftsmanship is a beautiful and intricate art form woven into the fabric of the continent's cultures for ...

The animals constantly grew new shell material as they aged, but the their bodies always remained in the outer chamber. The walls that separated each chamber helped protect the shell from being ...

Organisms make their skeletons from a variety of materials. Remember, "skeletons" include bone, the protein shell of crabs or insects, the sturdy shells of clams, or the massive rock secreted by coral ...

As well as recycled plastic, the chassis is also made from oyster shell material, making it carbon neutral and 100% recyclable. Unfortunately, when holding and using the Acer Aspire Vero 16 ...

Pearls are made by marine oysters and freshwater mussels as a natural defence against an irritant such as a parasite entering their shell or damage to their fragile body. The oyster or mussel slowly ...