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Deep below the surface of Ireland’s mountain loughs are a relic of the country’s ice age history – Arctic char. These rare and mysterious fish are normally found further north in the freezing waters of the Arctic, but a few small populations were left stranded in the landlocked glacial loughs when the ice sheets melted.

At the turn of the century, Ireland’s Arctic char were thought to have been wiped out by pollution, but a new population has recently been discovered to have clung on in a small lake above Lough Melvin.
This clip is from:
First broadcast:
7 April 2008

Classroom Ideas

Students could examine the fate of other animals that lived in Britain during the ice age; they could try to explain why some species were able to survive while others went extinct.