Texas Parks and Wildlife Code - PARKS & WILD § 12.017. Damaging Markers

(a) No person may damage, deface, destroy, or remove, tie up a boat to, or in any way render inoperative or ineffective a marker, buoy, light or sound signal, radar reflector, or daymark or any part of these devices, including the attachment intended to hold the device in place.

(b) The fact that a device or part of a device specified in Subsection (a) of this section may have been established by the state in water adjacent to but outside the territorial water of the state is not a defense against a prosecution for damaging state property.