did i watch too many world war 2 submarine movies when i was growing up? yeah, probably. but das boot is awesome - if you haven't seen it you really should.
there's been a fair amount of sloppiness in the implementation of various aspects of pet battles. (yes, safari hat, i'm looking at you.) one sloppy that's been around since beta has been the inconsistency with which blizzard puts accuracy warnings on tooltips. now, moth dust's tooltip says "This ability has a moderate chance to miss" right up front, so you know about what to expect (turns out "moderate" means "hits 80% as often as nomal"). however, dive and its sister-attacks burrow, heroic leap, launch, meteor strike, proto-strike and lift-off are also 80% accuracy attacks, but there's no mention of this on the tooltip. same with mana surge, deep breath, and probably a few i've missed. now, if you crunch the math, you find that this accuracy decrease means that these attacks will be approximately as effective as doing basic attacks - fewer big hits vs. more smaller hits. without it, they'd be overpowered. so i'm fine with it. i just wish blizzard would check the tooltips and make sure they supply the information we need.
if you're curious about accuracy effects, you can get more info from wowdb.com. be aware that currently it gives the wrong for attacks that hit 1-2 or 1-3 times instead of just once.