var vtn_player_type = "vp";var ven_video_key="NjIzNzc4fHwxNDcxfHwwfHx8fHx8";var ven_width="660";var ven_height="409";France kicks off nearly a month of exceptionally large spring tides with the so-called "tide of the century" due on March 21. Duration 00:33