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Millions of eels journey from Bermuda to Britain and back

27 March 2015 Last updated at 09:27 GMT

Millions of eels have been arriving in the south-west of England having travelled thousands of miles from the Sargasso Sea near Bermuda.

After a decade spent in British waters they will attempt to return.

However, man-made obstacles have been getting in their way and some conservationist are trying to help.

Tim Muffett reports.