Fig. (1) Screening of the growth inhibition percentage of the 8 extracts at the two concentrations 10 and 100 μg/ml. Data represent mean ± standard deviation, all in duplicates. Sarcophyton glaucum (1), Liagora farinosa (2), Litophyton arboretum (3), Colpomenia sinuosa (4), Hydroclathrus clathratus (5), Sargassum graminifolium (6) and extracts Holothuria fuscocinerea (7) and sea urchin Echinometra mathaei (8).