ABSTRACT
The genus Ulva (Phyllum Chlorophyta, Family Ulvaceae) is a kind of green seaweed which has been exploited for many purposes is very rich in bioactive compounds that are important for medical purposes, such as anti coagulan, anti cancer; anti oxidant, anti microbial and anti influenza. Ulva has been used for a long time but still lack of cultivation techniques lnformation about the characteristics and biological aspects of Ulva is important for basis technology of Ulva cultivation, including reproductive biology, habitat, distribution and commercial uses of Ulva. The technology of Ulva cultivation is expected to reduce exploitation of Ulva in the wild.