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One of the world’s most biodiverse aquifers is full of strange, blind creatures that have evolved in isolation for millions of years. But one is missing.

This episode was reported by Benji Jones and Mandy Nguyen, who produced the episode. Editing from Meradith Hoddinott, Katherine Wells, Brian Resnick, and Noam Hassenfeld, who scored the episode. Mixing and sound design from Cristian Ayala. Fact-checking from Richard Sima.

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