Just realized that in DMing 5e I have unconsciously used a falling-in-water rule-of-thumb that I inherited from somewhere (maybe 2e or AD&D or maybe even Pathfinder). The ruling I've been using is as follows:
- No damage for 20 feet of falling.
- Half-damage next 20 feet.
- Normal damage beyond that.
Realizing there should be a Strength (Athletics) for "swimming" (in context, "diving") to take even less damage with a proper dive in sufficiently deep water, I started to look for specifics on that. Am I just missing it somewhere? (Also didn't find it searching this stack.)
Are there clear 5e rules for both jumping and diving in water of various depths?