Kelp

Kelp is a non-solid plant block that generates in all oceans. It has an item form that can be smelted to dried kelp.

Obtaining
Breaking part of a kelp stalk will destroy the entire stalk. Each block has an undetermined chance to drop a kelp item. Kelp grows underwater at an undetermined rate and can only grow into a water block with water above it.

Natural generation
Kelp naturally generates in ocean biomes, near sea grass.

Usage
Kelp can be placed underwater by hand, or anywhere by the use of commands such as. Placing it by hand will give it a random age value between 0 and 19.

Gallery
Seetang Algue Kelp Wodorosty 海带