The Salmon Hat is an unreleased Common COMING SOON item. For unknown reasons it possible to craft it with 8 Raw Salmon for a short time. It used to be unlocked in Raw Salmon Collection VII. Later the item was made uncraftable and is currently unobtainable.
History
The Salmon Hat was added into the game and later made uncraftable due to unknown reasons. Since then it is a COMING SOON item unlocked in Raw Salmon Collection IX.
When originally crafted it had the enchantments Aqua Affinity I, Depth Strider I and Respiration I.
Value
Salmon Hats are currently being sold for 10-20m coins on Auction House. It is estimated that 100-1000 of them exist.