Charles Darwin
Captain Fitzroy
Technician
Annie Darwin
Fuegia Basket
Boat Memory
Jemmy Button
Mrs. Davies
Emma Darwin
Etty Darwin
Parslow
George Darwin
Franky Darwin
Lenny Darwin
Joseph Hooker
Thomas Huxley
Nanny Brodie
Reverend Innes
Thatcher
Goodman
Dr. Holland
Dr. Gully
Landlady
Landlord
Zoo Keeper
Churchgoer (uncredited)
Mrs. Darwin's Maid (uncredited)