Adult abalone ŽHaliotis iris. from Stewart Island, New Zealand were transported to
the Glenhaven Aquaculture Centre ŽNelson, New Zealand., held for several weeks, then
induced to spawn by the hydrogen peroxide technique ŽMorse et al., 1977.. Larvae that
hatched and swam to the water surface overflowed to a 500-l larval tank. Both the
hatching tank and larval rearing tank received 2–3 l miny1 of seawater Žsand-filtered,
then 1 mm cartridge-filtered and UV-treated, 16"0.58C