Section 30. If it appears to the department that the digging or removal of stones, gravel, sand or other material, upon or from any beach, shore, bluff, headland, island or bar, in or bordering on tide waters, or the destruction of any trees, shrubs, grass or other vegetation growing thereon, is, or is likely to prove, injurious to any harbor or other navigable tide waters, the department may, by written notice, prohibit such digging or removal, or the doing of any acts injurious to such trees or other vegetation, upon or from any such beach or other place aforesaid specified in such notice. Whoever, after receiving such notice, wilfully does any act or thing prohibited therein, and which is authorized to be so prohibited by this section, or, being the owner or having the control of any land specified in such notice, wilfully suffers or permits such act or thing to be done thereon, shall be punished by a fine of not less than twenty nor more than two hundred dollars.