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And our last Interpretive Trail (don't we love these things at the National Parks?!), The Salt Creek Interpretive Trail.

Here it's all about the pupfish. From what I remember: Back when Death Valley was a sea there was this fish, the pupfish. Then as the sea disappeared only the pupfish evolved to stay alive in the more and more salty ponds that were left until eventually they evolved into about 7 different species each inhabiting its own salty pond, so the conservation efforts are directed towards protecting them.
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