From the warp, go right, passed the nether wart farm towards the bamboo farm. Now turn right and walk down the stone pathway between the other farms until you reach the Sugar Cane farm. The Kelp farm is located behind it (made of Dried Kelp blocks).
How to use the farm
The farm runs constantly while a player is nearby. You can AFK anywhere nearby (make sure to block yourself in). Place fuel for smelting in the upper chest labelled "Fuel". Collect kelp, dried kelp and Dried Kelp Blocks from the chests labelled with item frames.
