Microstructure　adhesive　pads　can　effectively　manipulate　objects　in　underwater　environments.　Current　adhesive　pads　can　achieve　adhesion　and　separation　with　rigid　substrates　underwater;　however,　challenges　remain　in　the　control　of　adhesion　and　detachment　of　flexible　materials.　Additionally,　underwater　object　manipulation　necessitates　considerable　pre-pressure　and　is　sensitive　to　water　temperature　fluctuations,　potentially　causing　object　damage　and　complicating　adhesion　and　detachment　processes.　Thus,　we　present　a　novel,　controllable　adhesive　pad　inspired　by　the　functional　attributes　of　microwedge　adhesive　pads,　combined　with　a　mussel-inspired　copolymer　(MAPMC).　In　the　context　of　underwater　applications　for　flexible　materials,　the　use　of　a　microstructure　adhesion　pad　with　microwedge　characteristics　(MAPMCs)　is　a　proficient　approach　to　adhesion　and　detachment　operations.　This　innovative　method　relies　on　the　precise　manipulation　of　the　microwedge　structure＇s　collapse　and　recovery　during　its　operation,　which　serves　as　the　foundation　for　its　efficacy　in　such　environments.　MAPMCs　exhibit　self-recovering　elasticity,　water　flow　interaction,　and　tunable　underwater　adhesion　and　detachment.　Numerical　simulations　elucidate　the　synergistic　effects　of　MAPMCs,　highlighting　the　advantages　of　the　microwedge　structure　for　controllable,　non-damaging　adhesion　and　separation　processes.　The　integration　of　MAPMCs　into　a　gripping　mechanism　allows　for　the　handling　of　diverse　objects　in　underwater　environments.　Furthermore,　by　merging　MAPMCs　and　a　gripper　within　a　linked　system,　our　approach　enables　automatic,　non-damaging　adhesion,　manipulation,　and　release　of　a　soft　jellyfish　model.　The　experimental　results　indicate　the　potential　applicability　of　MACMPs　in　underwater　operations.