An　underwater　stable　superhydrophobic　surface　that　displays　a　very　low　affinity　to　water　and　microorganisms　is　urgently　required　in　marine　engineering　and　offshore　constructions.　In　this　study,　we　demonstrated　an　under-water　stable　superhydrophobic　surface　with　pressure　resistance,　chemical　stability,　biocompatibility,　and　biofouling　resistance.　The　surface　demonstrated　superhydrophobicity　under　a　water　pressure　of　13.72　kPa　for　up　to　27　days.　To　examine　the　anti-biofouling　property　of　the　surface,　the　as-prepared　samples　were　submerged　in　a　natural　lake　for　50　days.　The　surface　could　withstand　water　flush　and　biological　attacks　for　more　than　35　days.　The　mechanical　stability　of　the　surface　was　evaluated　by　a　sandpaper　scratching　test.　An　abrasion　length　of　12　m　would　not　decrease　the　water　contact　angle　of　the　surface,　which　is　superior　over　the　state-of-the-art　coatings　based　on　candle　soot　networks.　The　stable　long-lasting　underwater　superhydrophobic　surface　is　of　great　importance　to　marine　applications.