Deeper oceans and infinite breathing underwater enchantment

Minecraft should add a super rare helmet enchantment that lets you breathe underwater forever while wearing it. This could work with a huge ocean update: - much deeper oceans - dark abyss biomes - mysterious underwater structures - rare deep-sea mobs and bosses - dangerous pressure zones The enchantment could be treasure-only so players have to explore dangerous oceans to find it. Oceans would finally feel mysterious and worth exploring for long expeditions.