This guide will let you know how to make Synthetic Fibres in Subnautica. Go through the guide and follow the simple steps to make it.
First, you have to go closer to the Pod-19, and you will find reddish grass there. Then head to the down, and you will find some red plants there, as shown in the image below.
After that, you will need to go ahead, and there you will find a blood oil, pick it up and then find creep vine. You have to cut the vines first and then grab them.
Now you have to go to advanced materials, get fiber mesh first, and then get the Benzene 3 blood oils. Now you can make synthetic fiber using these two materials, as shown in the image below.