Any person who introduces, places, or causes to be introduced or placed, any nonindigenous aquatic plant into any public waters of the state shall be in violation of this chapter. For purposes of this section, the unintentional adherence to a boat or boat trailer of a nonindigenous aquatic plant, and its subsequent unintentional transportation or dispersal in the course of common and ordinary boating activities and practices, does not constitute a violation of this chapter.