Posidonia oceanica was used for animal food, especially for poultry, sometimes for camels during famines. The dead leaves are used in mattresses and pillows and for some other anecdotal uses (toys). It also is used in charcoal processing, compost, and as substrate for hydroponic agriculture and organic enrichment, and roof insulation. Posidonia oceanica banquette or beach wrack is currently used for building insulation Europe.