Minecraft wiki entry for Trident, associated text: Tridents enchanted with Riptide launch the player a certain distance when thrown, with the distance increasing for higher enchantment levels. They can be thrown only if the player is standing in water, or if it is raining on the block they are standing on. If the player charges it but walks into a nearby dry area, the charge is canceled. If the player throws a Riptide trident and collides with a mob, the mob takes melee damage (including critical damage if the player is falling). In Java Edition tridents enchanted with Riptide take one durability damage upon throwing, and lose an additional 1 durability if it collides with an entity on both editions.