sea water tide hitting against a man made rock barrier

sea seas water tide tidal hit hitting rush man man-made rocks rock barrier barriers bay shore shores artificial break breaking wave waves foam foamy closeup close low high current shallow deep depth gradual gradient reef reefs hard stone stones mineral natural brown brownish dark light white clear seawater beach beaches rise rising level levels climate change coast coastal protect protection protections island islands coastline coastlines seawall seawalls bulkhead bulkheads flood floods reclaim reclaimed land lands