Spring is that time of year when freshwater creeks and streams all along the Philadelphia region are swarming with native, migratory eels — and it’s just one stage of their wildly complex life story.
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Spring is that time of year when freshwater creeks and streams all along the Philadelphia region are swarming with native, migratory eels — and it’s just one stage of their wildly complex life story.
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An historic expedition of the Cooper River, from its mouth at the Delaware River to its source at Gibbsboro, to uncover its hidden story
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On the trail of the invasive northern snakehead
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Fieldwork photoblog shows scientists getting their hands dirty
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