Nevertheless, for those turtle populations that people haven't got a clear understanding of yet, Chen and many others fear that non-protected species may still be overused. "Simply estimating the number of turtles in the world, and calculating total reasonable use, is meaningless."
不過，針對人們尚無法掌握的烏龜族群，研究過海龜的陳添喜也擔心，很多人認為非保育類烏龜族群，仍可以適度利用，「但估算出全世界有多少烏龜，然後進行所謂合理利用，可能是無意義的。」