Ascophyllum is a genus of brown seaweeds that are commonly known as rockweeds. These seaweeds belong to the family Fucaceae and are found in marine habitats worldwide. Some common synonyms for the Genus Ascophyllum include brown algae, bladderwrack, and seaweed. Some species within the genus, such as Ascophyllum nodosum, are used for commercial purposes, such as fertilizer and animal feed. Ascophyllum has been used in traditional medicine for its antioxidant, anti-inflammatory, and antimicrobial properties. With their unique properties, Ascophyllum species play an essential role in the marine ecosystem and the industries that rely on them.