Radio New Zealand journalist (and Lazy Seal) Lynda Chanwai-Earle did a radio series on diving. One of them was on New Zealand Freedivers, including some interviews with Lazy Seal club members, and some top New Zealand freedivers like William Trubridge. You can listen to the long extended edit of the show below, or go to the original podcast web page which includes additional information and some links and images.  The full series includes stories on Navy divers, commercial paua divers, and the national police diver squad, and it can be found as podcasts on the Radio New Zealand website.