Pinus thunbergii, commonly known as Japanese black pine, is a species of pine tree native to coastal areas of Japan and Korea. It is characterized by its tall, straight trunk and dark green, needle-like leaves that grow in pairs. This tree can reach heights of up to 30 meters and is often used for coastal protection due to its ability to stabilize sandy soils. The bark of Pinus thunbergii is thick and rugged, providing resilience against harsh weather conditions. This species is also valued in landscaping and bonsai cultivation for its aesthetic appeal. Additionally, it is used in traditional Japanese architecture and for timber production.