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Nature
The Eel Life Cycle
The remarkable lifecycle of the eel, a catadromous fish found all over the globe, in fresh and salt water ecosystems alike. Eels begin life in the ocean before migrating in their larval stage to rivers and streams where they can spend decades before returning to the oceans to spawn. The Mystery of Eels premieres April 17 at 8/7c.
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The explosion of dog types into the roughly 400 breeds and dogs' role in medical care.
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No spider can escape the tireless pursuit of Martin Nicholas.
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It's one of the most brutal environments on Earth - so how does life carry on here?