Bob
Jane (as Julia Mc. Kay)
Dr. Geoffrey (as Alan Collins)
Lee
Col. Kovacks
Scientist (uncredited)
Carlos - Security Officer (uncredited)
Boat Crew (uncredited)
Guard (uncredited)
Guard Killed by Snake (uncredited)
Griffith - Security Officer (uncredited)
(uncredited)
Helicopter Pilot (uncredited)
Wellborn - Security Officer (uncredited)