- Broadcasting By:
- John D. Stewart
- Produced By:
- Ronald Mason
- Kantar, the village elder:
- J G Devlin
- Kestan:
- James Ellis
- Belgar:
- James Boyce
- Old Man:
- Maurice O'Callaghan
- Esper, a fisher boy:
- Terence Cromie
- Fingan:
- John McBride
- Pastor Fidelk:
- R H MacCandless
- Velvan, a senior civil servant:
- Alfred Arnold
- Amsay a scientist:
- Harold Goldblatt
- Bolk, M P:
- John F Tyrone
- Minister of Fisheries:
- Buxton Forsyth
- Captain of the Narssen:
- Michael Baguley
- Muertag, Esper's mother:
- Elizabeth Begley
- Fishermen:
- Charles Owens
- Fishermen:
- Colin Blakely
- Fishermen:
- Charles Witherspoon