Java Edition 18w08b

18w08b is the twenty-second snapshot released for 1.13, which added 3 types of fish mobs and fish buckets, a crafting recipe for dried kelp blocks, and changed the player's underwater visibility.

Items

 * Fish buckets
 * Cod bucket
 * Salmon bucket
 * Puffer fish bucket.
 * When, it will place a water source block and spawn the corresponding fish inside it.
 * Unused texture for an upcoming clownfish bucket added to the game files.
 * Spawn egg
 * Cod
 * Salmon
 * Pufferfish

Mobs

 * Added fish as mobs.
 * Cod
 * They spawn in cold, normal, and lukewarm ocean biomes.
 * Swim in groups of up to 9 cod.
 * Salmon
 * They spawn in frozen ocean, cold ocean and river biomes.
 * Swim in groups of up to 6 salmon.
 * Pufferfish
 * They spawn in lukewarm and warm ocean biomes.
 * Inflate themselves when a player gets near.
 * Will cause 7 seconds of Poison to nearby players.
 * They drop themselves when killed.
 * They need water to live. Outside of water, they flop around before suffocating.
 * They can be caught with a water bucket.

General

 * Dried kelp can now be crafted into dried kelp blocks, which can be crafted back into dried kelp

World generation

 * Warm and lukewarm oceans now have sand floors.
 * Deep warm ocean biomes no longer generate.

Gameplay

 * Changed natural water visibility.
 * The longer a player stays underwater, the better they will be able to see. (Maximum underwater visibility is given when a player stays underwater for 1 minute)
 * The Water Breathing status effect and Respiration enchantment no longer grant enhanced vision underwater.

Video
Video made by slicedlime: