Worth readng:
https://www.hodinkee.com/articles/pa...ter-resistance
And
https://www.hodinkee.com/articles/wh...can-trust-them
In summary therefore we can see that except for specific cases: (a) 100 meters is more than enough; (b) your watch may be a lot tougher than just the numbers tell you; and (c) you can't swim fast enough to defeat your dive watch depth rating, not by a long shot. In the last case I assume that hitting the water fast enough would of course at a certain point cause enough of an increase in pressure to be an issue (one wonders about jet skis) but at that point, you probably have other problems.