• 
  Eugène Lourié

  regizor
• 
  Douglas Hickox

  regizor

• 
  Jack MacGowran

  Dr. Sampson, the Paleontologist
• 
  John Turner

  John
• 
  Patrick Jordan

  Photo Lab aide
• 
  Derren Nesbitt

  Radio Officer
• 
  Gene Evans

  Steve Karnes
• 
  Maurice Kaufmann

  Mini Submarine Officer

• 
  Leigh Madison

  Jean Trevethan
• 
  André Morell

  Prof. James Bickford
• 
  Leonard Sachs

  Scientist
• 
  Henri Vidon

  Tom Trevethan

• 
  Ken Hodges

  imagine
• 
  Eugène Lourié

  design de producţie
• 
  Eugène Lourié

  scriitor

• 
  Robert Abel

  scriitor