I believe the answer to your first question is that it is safe, and the idea of it being a health hazard was a rumor. I don’t know for sure though.
Now, Question 2. What happened to Jaws?
Well, in the first one, he gets a scuba tank shoved in his mouth which is then shot, exploding him into many pieces. In part 2, he swims toward vibrations he senses in the water, comes up, and clamps down on an live electical cable, frying him. Yum. Seafood. And in Jaws: The Revenge (This time it’s personal), he gets impaled by a woman who has simply had enough. Of what? I don’t know…Jaws movies?
Hope this answers your question.
Leki-Less