Casuarina equisetifolia, commonly known as the Australian Pine or Beach She-oak, is a fast-growing, hardy evergreen tree native to coastal regions of Australia, Southeast Asia, and the Pacific Islands. It is widely planted for its windbreak, erosion control, and ornamental qualities, especially in coastal and sandy environments.

This tree is notable for its fine, needle-like foliage resembling pine needles and its ability to thrive in poor, sandy soils and salty conditions, making it ideal for beachfront stabilization and urban landscapes.