Aqua Affinity is a helmet enchantment in Minecraft that removes the penalty for mining underwater as it usually takes five times as long for the item to be broken. Aqua Affinity makes it easier and less time consuming to gather prismarine from underwater temples. It only has a maximum of one level and is very easy to acquire on a helmet or a turtle shell in the game.
Underwater mining is frustrating, but Aqua Affinity can save you from a lot of frustration. Aqua Affinity will remove the penalty for mining underwater. Mining underwater usually takes five times as long for the item to be broken. Unfortunately, the penalty is only removed if the player is not floating, but having Aqua Affinity is a must if you plan on doing a lot of digging underwater.
This enchantment only has a maximum of one and is very easy to acquire on a helmet. It makes turtle shells even better as mining underwater coupled with the water breathing effect can make for a very useful armor piece if you are looking to extend the time you have underwater.
A conduit may provide water breathing indefinitely, as long as you are within its range, but the recipe is difficult to complete and requires defeating elder guardians in order to gather the prismarine. In the meantime, getting an Aqua Affinity enchantment can help you gather the materials for the conduit and give you the opportunity to mine underwater.
Aqua Affinity will only slot into helmets. Any type of helmet will work (Leather, Chainmail, Iron, Gold, Diamond, Netherite, and Turtle Shells). Since it is an armor-specific enchantment, it is easy to forget, but its benefits are great and there is no penalty to enchanting your armor.
Unfortunately, there is no enchantment that allows you to see underwater. There is the potion effect of night vision or conduit buffs that allow you to have perfect vision underwater, but there is no armor enchantment that will grant this bonus to you.
No villager will offer Aqua Affinity on its own. You may find an armorer or leatherworker who will sell an enchanted helmet that has a chance to generate with the enchantment on it. This is an unreliable way to obtain Aqua Affinity as you have to max the villager’s profession level and hope that the armor piece they are selling happens to come with Aqua Affinity.
Mending is by far the best enchantment in Minecraft. Whereas it does not affect the utility of the tool or armor, it essentially makes the durability infinite and you can rely on keeping that item as long as you keep an eye on its durability bar. Due to its near-infinite capabilities it is also very difficult to find as you cannot get mending from an enchantment table.
Aqua Affinity will only affect your mining speed underwater. Respiration on the other hand will allow you to stay underwater longer. Each level of respiration will make your breath meter deplete slower.