(1) Land shall be legally enclosed land, or posted land, when enclosed by a legal fence, and when there shall be placed along the boundary of said land in the manner herein provided posted notices to the public; provided that it shall not be necessary to erect any fence along any portion of the boundaries of the land formed by any ocean, gulf, bay, river, creek, or lake.
(2) The fences, enclosures, and the posted notices, when erected, placed, and maintained as herein required shall be notice to the public that the land enclosed thereby is private property upon which unauthorized entry for any purpose is prohibited and shall constitute a warning to unauthorized persons to remain off of or to depart from said land.
