

Unwittingly, he trained a dolphin to kill the president of the United States.
A marine biologist teaches his dolphins to communicate in English but shady characters plan to kidnap the trained mammals for a more sinister purpose.
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Severn Darden
Schwinn

Elizabeth Wilson
Mrs. Rome

William Roerick
Dunhill
Jon Korkes
David

Edward Herrmann
Mike

Leslie Charleson
Maryanne

Victoria Racimo
Lana

John David Carson
Larry
Pat Zurica
First Mate
Willie Myers
Stone

Phyllis Davis
Receptionist
Julie Follansbee
Women's Club

Florence Stanley
Women's Club

Brooke Hayward
Women's Club
Pat Englund
Women's Club
Johann Benét
Boy in Park (uncredited)

Buck Henry
Man Standing Outside Women's Club (uncredited)
Robert Lydiard
Alpha (voice) (uncredited)
Erick Vinther
Patron (uncredited)
The Day of the Dolphin ≣ 1973 ≣ Trailer
Trailer · YouTube
The Day of the Dolphin (1973) Original Trailer [FHD]
Trailer · YouTube
Larry Karaszewski on DAY OF THE DOLPHIN
Featurette · YouTube