Research by Loren McClenachan (environmental studies) shows that for more than 400 years native Hawaiians caught fifty percent more fish than they do now, far exceeding the levels considered sustainable by today’s scientists. The fish population was still able to thrive as a result of strictly-enforced fishing regulations.

See Also:

Ancient Native Secrets of Sustainable Ocean Fishing

http://www.earthtimes.org/conservation/ancient-native-secrets-sustainable-ocean-fishing/1880/

 

Prehistoric Fisheries Offer Clues to Sustainable Catch

http://www.newscientist.com/article/dn21623-prehistoric-fisheries-offer-clue%20s-to-sustainable-catch.html