There are a large number of studies. In my speaking notes, which I've sent to the clerk, I cite at least six different studies that have compiled various empirical or modelling studies that look at the proportion of the total ecosystem of the ocean that needs to be protected to recover fish populations. It's uncanny, all these studies point to between 20% and 40%. On average, all the values across those studies are about 30%.
A lot of evidence points to 30%. A long time ago, that was the target. That global target was eroded when it became clear that it would not be reached. We're now stuck with the 10%, which to be honest is meaningless. No evidence supports the 10%.