In Java Edition, only aquatic mobs receive the extra damage. Aquatic mobs include dolphins, guardians, elder guardians, squids, turtles and all variants of fish, but not drowned because drowned are classified as undead mobs rather than underwater mobs.
In Bedrock Edition, the damage applies to other players, as well as all mobs when in contact with water: underwater, in flowing water, and in rain.
|This section needs more information.|
Information requested: An actual history
|1.13||18w07a||Along with the addition of tridents, the Impaling enchantment has now been added.|
|1.4.0||beta 220.127.116.11||Added the Impaling enchantment as part of Experimental Gameplay, which is able to be applied to the new tridents.|
|beta 18.104.22.168||The Impaling enchantment has now been fully implemented.|
|Legacy Console Edition|
|TU69||1.76||Patch 38||Along with the addition of tridents, the Impaling enchantment can now be applied to them.|