Ink Sac

An ink sac is an item dropped by a squid upon death. Ink sacs are used to create black dye.

Squid
Squid drop 1–4 ink sacs upon death.

Fishing
Ink sacs can be obtained as a "junk" item from fishing. Luck of the Sea decreases the chance.

Compound creation
Ink sacs can be created from its base elements, using the compound creator.

Trading
Wandering traders sell 3 ink sacs for an emerald.

Crafting ingredient
$$, ink sacs can be also used in banner patterns:

Dye

 * Each type of dark prismarine can be crafted using varying amounts of 8 prismarine shards.

Trading
Journeyman-level Librarian villagers have a $2/3$ chance to buy 5 ink sacs for an emerald $$. They always offer the trade $$.

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