Minecraft's oceans were largely uninteresting, bare expanses made of dirt and gravel for a long time. This is not the case anymore. The undersea now has monuments, ruins and reefs. Aqua affinity and respiration are two of the reasons why players want to spend more time underwater than ever before.
Two similar but distinct Minecraft enchantments are aqua affinity and respiration. Because of their underwater benefits, players will want both enchantments to be on their helmets.
Aqua affinity is a single-level enchantment that can either be worn on helmets or turtle shells. Normaly, if a player's head goes underwater, it takes five times longer to mine any blocks.
The aqua affinity enchantment eliminates the penalty completely. All levels of the enchantment work the same, even if they are placed on helmets using console commands.
Mining speed is affected by a similar but different penalty when a player is trying to mine while floating. This penalty results in mining speeds that are five times slower. This penalty adds to the underwater mining speed penalty.
This means that an underwater player who attempts to mine while floating downs will do so 25 times faster than normal. While the floating mining penalty is not affected by the aqua affinity enchantment, it does remove the underwater penalty.
Aqua affinity is a penalty that is five times slower than an unenchanted player mining the same thing.
Respiration is an Enchantment with three levels. This enchantment is available in two forms: turtle shells or helmets. This enchantment increases the player's underwater breathing by 15 seconds for each level.
This is in addition the 15 second base underwater breathing time. At respiration level 3, players can stay underwater for up to 60 seconds.
This additional time will be increased by 10 seconds if a turtle shell is worn by a player. This allows them to breathe underwater for a maximum of 70 seconds.
These two Minecraft helmet enchantments don't have to be mutually exclusive. Both enchantments also work well together to cover the weaknesses of each other. While respiration allows players to spend more time underwater, it also means that players can mine 5-25 times faster than normal. Aqua affinity solves this problem.
Mining at a steady speed underwater can be very slow, and players have only 15 seconds to take damage. That might not be enough time to reach seafloor in deep ocean.
The solution is respiration. This allows players to breathe underwater, giving them ample time to complete their tasks. These two are amazing complements and should be worn on all helmets that players intend to use for a long time.