However, the 1975 film, while it was the first movie to gross more than $100 million worldwide that Shaw had ever been part of, he didn't make a cent from it because of the taxes he had to pay from working in the United States, Canada and Ireland.
Shaw ad-libbed the "Here lies the body of Mary Lee" line after director Steven Spielberg prompted him to give Brody's wife (on the dock) a hard time. Asked later where he quoted it from, as it would require getting a license and release from the author to be used in the film, Shaw said that was unlikely, as it was off an old grave marker in Ireland.
Shaw sang the song "Spanish Ladies" while at the dock with Hooper and Brody, loading the boat to catch the shark. The song is a traditional British shanty, not a New England one. However, Shaw changed the lyrics from "for we have received orders, for to sail to old England..." to "for we've received orders for to sail to old Boston..." Shaw who was born and raised in England was an accomplished novelist and playwright, and may have become familiar with the tune while working as a teacher in the fishing town of Saltburn by the Sea.
Though respected as an actor, Shaw's trouble with alcohol was a frequent source of tension during filming. In later interviews, Roy Scheider described his co-star as "a perfect gentleman whenever he was sober. All he needed was one drink and then he turned into a competitive son-of-a-b!tch."
According to Carl Gottlieb's book "The Jaws Log," Shaw was having a drink between takes, at which one point he announced, "I wish I could quit drinking." Much to the surprise and horror of the crew, Richard Dreyfuss simply grabbed Shaw's glass and tossed it into the ocean. When it came time to shoot the infamous USS Indianapolis Scene, Shaw attempted to do the monologue while intoxicated as it called for the men to be drinking late at night. Nothing in the take could be used. A remorseful Shaw called Steven Spielberg late that night and asked if he could have another try. The next day of shooting, Shaw's electrifying performance was done in one take...