Kelp Blocks, an alternative to Dried Kelp Blocks, a storage block for raw Kelp, a way to attract fish, a new underwater building block, and a new way to make Dried Kelp! :
How to use Dried Kelp as Fuel on Minecraft PS3/PS4/PS5 - YouTube
Dried Kelp – Minecraft Wiki
You can use dried kelp blocks to make tents : r/Minecraft