- Description: Building material made of countless bones buried in the ocean floor which have hardened over decades. Of course, deep sea glue isn't just made of fish bones.
- Usage: Upgrade Epheria Caravel
- How to Obtain:
Exchange with Crow Coin x140 at the Crow Coin Shop.
Reward for [Daily] Lively Iliya Island I.
Exchange with [Level 3] Sea Trade Goods.
- Exchangeable Sea Trade Goods
Torn Pirate Treasure Map, Gooey Monster Blood, Rare Herb Pile, Blue Candle Bundle, Skull Decorated Teacup, Weasel Leather Coat, Old Hourglass, Round Knife
- Usage: Material for Epheria Caravel.