David Zindel, son of the Pulitzer Prize-winning American playwright Paul Zindel, told the Guardian “he believes his father’s work Let Me Hear You Whisper, a play about a female janitor in a research laboratory who bonds with a captive dolphin and tries to rescue the creature, is a source of inspiration for The Shape of Water. Del Toro’s film was nominated on Tuesday for 13 Oscars, including best picture, best director and best original screenplay.”