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Oman’s seas host 18 unique species of seaweed: Study

Wednesday, 3 September 2025 22:24

Muscat – A study by Sultan Qaboos University has identified more than 400 species of seaweed in Omani waters, including 18 unique to the country. Most are found in waters off Dhofar. Researchers highlighted the potential of seaweed for commercial use, noting that it requires neither fresh water nor arable land. The study monitored growth […]

Muscat – A study by Sultan Qaboos University has identified more than 400 species of seaweed in Omani waters, including 18 unique to the country. Most are found in waters off Dhofar.

Researchers highlighted the potential of seaweed for commercial use, noting that it requires neither fresh water nor arable land. The study monitored growth stages and analysed species composition, selecting samples through comparisons with global studies.

Dr Ahmed Ali al Alawi, Associate Professor at College of Agricultural and Marine Sciences, said seaweed are classified by pigmentation into three groups: brown, green and red algae. The study, he added, provides essential data for assessing the economic value of this natural resource in Oman.

The research found that some species could be used in protein and colloid production, while others showed promise for pharmaceuticals and carbon dioxide absorption. Despite its abundance, seaweed is not traditionally part of Omani cuisine, and published data on local species is limited.

Global demand for seaweed reached an estimated US$18bn in 2024 and is projected to climb to US$44bn by 2034. Countries such as Japan, China, Korea and the Philippines use seaweed in food, while in other regions it is mainly exploited for industrial purposes, including gelling agents like agar and carrageenan.

With its nutritional and medicinal properties, seaweed is increasingly used in food, medicine, cosmetics and agriculture. The study is expected to support efforts to develop these sectors and expand seaweed’s role in Oman’s economy.

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