‘The whole, um … history of the eel,’ said Theodore, putting his collecting box on the ground and seating himself on a convenient rock, ‘is very curious. You see, at certain times the adult eels leave the ponds or rivers where they have been living and, er … make their way down to the sea. All the European eels do this and so do the North American eels. Where they went to was, for a long time, a mystery. The only thing, um … you know … scientists knew was that they never came back, but that eventually these baby eels would return and repopulate the same rivers and streams. It was not until
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