Aqueous and organic extracts of the Arctic sponge Aplysilla sulfurea and methanolic extracts from the Arctic phytoplankton Porosira glacialis were fractionated using preparative HPLC into 40 fractions according to the polarity of the components in the extract. The fractions were tested for antibacterial, anticancer and antioxidative activities. After re-chromatography, active fractions were analyzed ...