Back in 1975, I remember being terrified by the movie "Jaws". I did not go into the ocean for years afterwards and even today, I still think about sharks when I get more than knee deep in ocean water.
Watched that movie on TV with my kids a few years back and they were laughing at it. They thought the special effects were cheesy and found it hard to believe that millions of people were once freaked out about it.

Jaws doesn’t really have many special effects. You hardly ever see the shark.