Ocean and island materials
Clay
Clay is an island reef material used in crafting and can be gathered during the same underwater trip as Sand and metals.
Underwater island reefs, along the wall around the island foundation.
Clay can be collected again during later island visits. The reef trip is repeatable, though the actual nodes available depend on the island you visit.
Stop when you have the Clay needed for the recipes on your list, or when your remaining oxygen or supplies make another pass unsafe.
Open a guide to find other locations and see what the item is used for.
Clay is an island reef material used in crafting and can be gathered during the same underwater trip as Sand and metals.