The Submerged Island was added to Blox Fruits with the Lightning Update. It’s an island in the Third Sea that players can travel to using the Submarine at the Submarine Port of Tiki Outpost Island. Apart from two quest-giver NPCs, there isn’t much to do on the Submerged Island until you discover a secret area. This guide will tell you everything you need to know about the Blox Fruits Submerged Island Secret Area.
