Hi Jiann Yu one my Philippine net citizen Narancu that Carrageenan is one of the most promising food additive industries. It is produced from three kinds of seaweeds two of which are farmed extensively in the Philippines, the source of 65% of world production. The weeds are grown in sea farms and the video shows a visit to one of these farms in Danajon Reef, Bohol, Philippines. However, due to recent year the industry is reeling because of natural calamity which ravaged the seaweed farms in Zamboanga City and other parts of Mindanao.Seaweed growers in Western Mindanao region have never been able to bounce back since then.