I enchanted a Netherite Helmet with Aqua Affinity I and (in survival mode) mined blocks underwater and the aqua affinity very rarely worked and would often stop while still mining the same block and it was mostly mining with the speed of normal underwater mining. To clarify i was wearing the helmet
I do not know what version number it it but it is the current Bedrock Edition on Xbox One so i will put 1.16.1
Edit: Fixed "Aqua Affinity III" in this post and a couple typos I made
Comments 3
Sorry I got them mixed together. I meant Aqua Affinity I. Thanks for that, I thought the strange mining was a bug, But instead needed ground is a feature. I had another sentence here explaining that I was going to delete it soon but I just realized I can't.
I've tested Aqua Affinity on netherite and leather helmets in 1.16.20 and it appears to be working correctly.
Note that the underwater mining speed penalty only applies when your head is underwater. There is a separate penalty for your feet not being on the ground, which applies when you are bobbing on the surface or sitting in a boat, as well as when you are underwater but not standing on the bottom. Aqua Affinity only cancels the head-underwater penalty. It does not affect the feet-off-the-ground penalty.
There is no Aqua Affinity III, there is only Aqua Affinity I. Maybe you mean Respiration III - if so, then it doesn't help with underwater mining, just lets you stay underwater longer before drowning. Also, even with Aqua Affinity I, you must be standing on the ground (bottom) to have normal mining speed - if you are floating, mining speed will be slowed.