In any proceedings for an offence under this Act, the onus of proving any of the following statements is on the person making the statement:(a) that at the time of the alleged offence a person was exempted from the relevant provision of the Act relating to that offence;(b) that the person (i) is an Aborigine; and(ii) at the time of the alleged offence was engaged in an Aboriginal activity;(c) that a person, vessel or thing referred to in the complaint was not in State waters;(d) that fish were taken from waters other than State waters;(e) that an activity occurred in waters other than State waters.