Several novel bioactive compounds were discovered from aquatic actinomycetes for example rifamycin from Micromonospora sp. (12); salinosporamide-A, an anticancer metabolite from Salinispora sp. (13) (Feling, 2003); marinomycins from Marinophilus sp. (14); abyssomicin-C from Verrucosispora sp. and marinopyrroles from Streptomyces sp.