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The largest creature ever to live, the blue whale averages 25 feet (7.6 meters) long at birth and weighs about three tons.

蓝鲸是最大的尚存生物，它们在出生时平均长达25尺(7.6米)重达大约3吨。

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The largest creature the scientists found was a thalattosaur, a marine reptile about 10 long, which would have preyed on the larger fishes there.

科学家们发现的最大型的动物便是海龙化石，这是一种海洋爬行动物，大概有十米长，他以捕食较大的鱼类为食。

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Their pioneering study of blue whales in this area reveals its significance as breeding and feeding grounds for the largest creature on earth.

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Scientists found the creature in the wetlands of Lake Alaotra, the largest lake in Madagascar.

BBC: Earth News - New carnivorous mammal species found in Madagascar