Kelp
Material Stack: 64 Since 1.13 (Update Aquatic)
Quick answer: Harvest it in any ocean biome except frozen, deep frozen and warm oceans.
How to get it
- Harvest it in any ocean biome except frozen, deep frozen and warm oceans
- Break the bottom of a stalk: everything above pops and floats up to you
- Plant one underwater and it grows up to 26 blocks tall - kelp farms run themselves
Uses
- Smelt into dried kelp for a snack or nine dried kelp blocks for serious fuel
- A dried kelp block smelts 20 items: kelp farms are self-fueling XP machines
- Turn flowing water into source blocks by growing kelp through it - water elevator magic
- Feed your composters: kelp is the crop that never stops giving
Renewability
Renewable: kelp regrows forever with zero replanting.
Java vs Bedrock
Identical in Java and Bedrock.
Related: Dried KelpWater Bucket