Java Edition 18w11a

18w11a is the twenty-eighth snapshot released for 1.13.

Blocks

 * Added coral fans
 * Doesn't generate naturally yet.
 * Can be placed underwater on the side of blocks.

Items

 * Drowned spawn egg
 * Spawns the drowned mob
 * Blue with olive spots

Mobs

 * Added drowned
 * Spawn in all oceans and rivers.
 * Zombies will morph into drowned after a while if they are in water.
 * Drowned can spawn with tridents, allowing you to get them in survival.
 * Do not float, but can swim.
 * All drowned have a melee attack, and ones with tridents have a ranged attack
 * Like zombies, drowned will attack baby turtles and stomp on and destroy turtle eggs

World generation

 * Added shipwrecks
 * Can be found in oceans and beaches.
 * Contain 1–3 loot chests containing different types of loot depending on the ship.
 * Can generate upright, sideways or upside down.

General

 * + will now copy your current location to clipboard

Video
Video made by slicedlime: