Activists with pew environment Group say countries should use the measures even before the treaty takes effect.

皮尤环境集团的活动家说各国即使在该条约生效之前都应该采取这些措施。

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Dr Susan Lieberman from Pew Environment Group said it was a big day for the convention.

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As with the Marshall Islands' declaration, the Cook Islands' effort was with the help of the Pew Environment Group, which advocates island nations' involvement because of the vast scope of their territorial waters.

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Matt Rand, director of Global Shark Conservation for the Pew Environment Group said that this was the latest of a number of studies "confirming the importance of preserving the parts of the ocean where sharks breed and raise their pups".

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