Captain Charles Moore discovered the 'Great Pacific Garbage Patch' in 1997 and he has spent much of his life revealing how pervasive plastic is in our oceans. Photo: Supplied/ Algalita Marine Research
His search for plastic has since broadened and he has found it in things like honey, salt, compost, and even in placenta and breastmilk.
His focus now is on measuring the amount of microplastics in drinking water in his home state of California.
Captain Moore spoke to RNZ's Nine to Noon presenter Kathryn Ryan
