Ultimate Novia Scotia tidal bore guide Tidal Bore: ('Bore' comes from the old Norse word 'bara' meaning a wave or swell) Occurs along a coast where a river empties into an ocean or sea. A tidal bore is a strong tide that pushes up the river, against the current. A tidal bore is a tidal wave. One of the coolest things about Novia Scotia is its tidal bore. This occurs...