Java Edition 18w15a

18w15a is the thirty-first snapshot released for 1.13.

Additions

 * Entities
 * Dolphins
 * Spawns in any ocean that isn't frozen.
 * Passive mob, but can attacks in groups.
 * Plays with near items by picking them up and dropping them after a very short moment.
 * Chase after boats.


 * Blocks
 * Blue ice
 * Fancy, slippery, bluier variant of Packed Ice.
 * Conduit
 * Odd, dust-like blocks with no use.
 * Spawn with water depsite not having the waterlogged tag (MC-128238, MC-128236)


 * Items
 * Heart of the Sea
 * Nautilus Shell

Water

 * Got a new texture.
 * Water now only blocks 1 light per block, instead of 3.
 * This only affects newly placed water - we will relight all chunks in an upcoming snapshot.
 * Ocean variants have their own water colors, and swamp color was changed.
 * In newly generated chunks, you're less likely to find frozen ocean next to warm ocean (and similar).