Below, you can find the full FFXIV: Endwalker item info for the Astral Algae item. This item is a Seafood and is usually a crafting material or the product of a craft. Sometimes it can be dropped from a monster or found in a chest.
Medicine Food Fish Ingredient Minions Mounts Triple Triad
 |
Astral Algae |
|||
|
Seafood Level: 1 |
Item Level: 430
NPC:  0 |
|||
|
Though you cannot be certain how this otherworldly clump of algae will prove beneficial to dragons, it’s the thought that counts. ※Only for use in Omicron society quests. ※Not included in the fish guide. |
||||