This guide will let you know where to find the Bulkhead in Subnautica. You have to follow the steps carefully to find it.
You will need to head about 1-2 bumps to the left at southwest, starting from the coral tube sticking up out of the water. Keep moving until you reach the floating island.
It is recommended to have either a sea moth or a sea glide, to reach the island faster, a survival knife, and you will also need a scanner.
The only threat you will encounter on the island is the cave crawler which you can easily kill or avoid. It doesn’t do much damage, so it should[‘t be too big a threat.
The coordinates for the island are (-760, 15, -1115).
Starting from the coral tube sticking up out of the water, you have to head about 1-2 bumps to the right of northwest until you reach the beginning of the blood help in the mushroom forest.
It is recommended to have a sea moth with either an Mk1 or higher depth module, a sea glide, a high capacity O2 tank. You will also need a survival knife.
At the entrance to the blood kelp, the only threat you might encounter is the crab squid; you have to avoid them since it can disable your vehicle.