- Every day, each one swallows some four million krill.
每天一头蓝鲸可以吃进400万条磷虾 - Such gargantuan harvests depend on the continuing fertility of the oceans
这样巨大的食量依赖富饶的海洋的不断提供 - But global changes now threaten the great blooms of plankton on which the whales depend.
但是全球环境的变化 让蓝鲸赖以生存的浮游生物急剧减少 - Once and not so long ago
曾经在不久以前 - three hundred thousand blue whales roamed the oceans
30万头蓝鲸让海洋看上去充满生气 - now, less than three percent of that number remains.
现在,只有不足9000头 - Our planet is still full of wonders.
我们的星球仍然充满惊奇
Once and not so long ago 曾经在不久以前
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