This film had a huge impact here in the UK.
Cinema queues round the block not seen since 'The Exorcist' the previous year, but without the Religious Zealots' pickets.
Shark fever took hold of the younger generation, which although the shark was the 'baddie', it is said that the film contributed much to marine ecology and preservation in general, and sharks in particular.
I remember the screams from the audience at the anticipated decapitated head coming out of the scuttle scene, which looks so tame now!