However, P. oceanica is found in two shapes: leaves decomposed and transported by clouds to form giant benches at the seaside that protect beaches from erosion. Balls that are the result of roots and rhizome fragments that are transported and formed by the waves along the shoreline are thought to be the most significant and well-studied seagrass species in the Mediterranean Sea; much work has been put into combining all of the spatial data that is currently available to provide a complete distribution of meadows in the basin. Several studies have focused on fractionating this seagrass to highlight its cellulose and lignin richness and achieve its value. The purpose of this review was to provide a small-scale evaluation of the current and known historical distribution of P. oceanica; the fractionation methods are used to separate P. oceanica components, its characteristics, the chemical composition, and the main routes and applications for valorizing P. oceanica for medical, industrial, and agricultural uses as documented in recent scientific studies published in recent years.