South Otago High School pupil Mitchell Hollows (18), of Balclutha, was named winner of the supreme innovator award and the senior engineering award after inventing a laser tool he hoped would save the lives of thousands of native paua. A keen fisherman, Mitchell has been diving for paua for a couple of years. It was on a fishing trip that he discovered paua are haemophiliac and can be damaged by physical measuring - the traditional method of measuring catch. This inspired him