That familiar message terrified Steven Spielberg, 27 years old at the time, with only one theatrical feature to his name. If one of the production's three animatronic great whites broke down, it could mean another wasted day.

In NatGeo's documentary 'Jaws @ 50,' Spielberg recalls having a panic attack after he wrapped filming on 'Jaws' — which premiered on June 20, 1975 For Steven Spielberg, making Jaws had a profound impact on his mental health.