For years, Mr. Pitman, the U.S. Marine ecologist, has searched the world's rivers and oceans for rare species of dolphins and whales.

多年以来，美国海洋生物学家Pitman足迹遍及世界各大河流和海洋，搜寻稀有的海豚和鲸鱼。

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The estuary keeps the surrounding land rich and fertile and provides a natural habitat for a number of threatened species, including the rare la Plata dolphin.

这处河口为周边地区带来了肥沃而富饶的土地，同时也为多种濒危物种如数量稀少的拉普拉塔海豚提供了自然栖息地。

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What appears to be part of a spring wedding bouquet is actually a nest for a rare species of solitary bee, a new study says.

一项新研究发现，有一种稀有的单居性蜜蜂的巢穴看起来就像是一场春天婚礼的花束一般。

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Home to orangutans, pygmy elephants and clouded leopards, this northeast region in the state of Sabah is a hotspot for rare and endangered species.

BBC: Malaysian Borneo on a single circuit

Environmentalists said the area is a breeding ground for bird species including rare skylarks and lapwings.

BBC: Environmental group opposes Gedling solar farm

An avid horticulturalist, he charmed Catherine Deneuve at a dinner party by talking with her for hours about a rare species of peony.

NEWYORKER: Sole Mate