Bag of Sea Salt can be obtained by killing Silk Crab (Lv. 15) inside of Coral Cave. Coral Cave is located West(NW) from the Monastery and a Coral Key is required for entry. Coral Key's can be obtained from fishing, killing Crabs, or by other players through Auction House, General Store, or trading. Alternatively, the Grimwall General Store Owner may have Bag of Sea Salt for sale if other players have sold it to him.
(MBreezySamurai) - Added on 11 August 2018 @ 1200pm.