Several international companies are eyeing up New Zealand coastal and offshore waters to establish seaweed farms which a marine researcher says could earn tens of millions of dollars. AUT seaweed biology Associate Professor, Lindsey White singles out seaweeds as future major player in the country's blue economy with bottomless potential earnings and he explains why NZ waters are an increasingly attractive option. We also speak to Sunny Sanderson from Kelp Blue which is a restorative large-scale offshore kelp cultivation enterprise - Kelp Blue is doing due diligence here.