The analysis of 64 species of ocean sharks and rays found 32 percent are at risk, including the great white shark.

对海洋中64种鲨鱼和鳐鱼进行分析发现32%处于危险当中，其中包括大白鲨。

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It will bring danger to all ocean life if sharks' numbers drop too low.

如果鲨鱼数量下降太多，会给所有海洋生物带来危险。

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Sharks and other ocean animals swim above and beside you as you walk through the tube.

VOA: special.2010.08.13

Activists for sharks note that the fish are valuable in the ocean.

VOA: special.2009.06.16

"We must stop the shark-finning which is resulting in the death of thirty to seventy million sharks each year because that has so upset ocean ecology by the removal of these often apex, top-level predators."

VOA: special.2011.03.15

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".

BBC: Shark mums 'invest' in newborns

And about a third of ocean-going sharks appear on the internationally-recognised Red List of Threatened Species.

BBC: Cook Islands' shark sanctuary creates world's largest

The rapid reduction of sharks is disrupting the ocean's equilibrium, according to Peter Knights, director of WildAid International.

CNN: Shark fin soup alters an ecosystem