Minecraft wiki entry for Enderman, associated text: Endermen can be harmed by melee attacks, water, lava, fire, splash water bottles, or rain. They are not damaged when standing in a filled cauldron‌[Java Edition only]. Endermen teleport away when they take damage from any of natural sources (1), continuing to do so until they find a dry location. They also teleport while taking damage from other sources, such as suffocation, poison, or wither.