The primary use for cork oak trees, specifically the species Quercus suber, is to produce cork. Cork is harvested from the tree's bark without harming it, making it a renewable resource. This unique bark has excellent properties, including being lightweight, buoyant, and elastic, and it is also resistant to moisture and fire. Cork is widely used in various applications, such as wine stoppers, flooring, insulation, and bulletin boards. Additionally, cork oak forests provide significant ecological benefits, including habitat for diverse wildlife and the ability to absorb carbon dioxide, contributing to environmental sustainability.