Knowledge
Seaweed Stalk
Description
Many mistake them for ordinary seaweed by the way they sway in the water. However this kind of seaweed stalk is extremely tough and can even withstand a blade. They are used as construction material.
How to obtain
Can be obtained through [Dialogue] after completing all Ravinia's Ship Upgrade Logs.
She appears to be giving out knowledge for meeting with the people who helped to write Ravinia's Ship Upgrade Log.