What is aqua affinity in minecraft?

Aqua Affinity is an enchantment in Minecraft that allows the player to mine blocks underwater at normal speed. Without this enchantment, mining blocks underwater is significantly slowed down.

This enchantment can only be applied to a helmet, and can be obtained through enchanted books, trading with librarian villagers, fishing, or finding it in enchanted loot in generated structures.

Aqua Affinity is a useful enchantment when exploring underwater environments, such as oceans, rivers, or underwater caves, as it allows the player to efficiently mine resources without being hindered by the slower mining speed underwater. It is also helpful for underwater construction projects or searching for rare items that may be hidden underwater.