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Sealed Cavern Island - Blox Fruits
Island

Sealed Cavern

Island

The Sealed Cavern is a hidden room on Submerged Island in the Third Sea. This is where the Sharkman Master lives, the NPC who allows you to train and improve the Sharkman Karate fighting style.

How to get it

On Submerged Island, go behind a house located near the Coral Pirates: the entrance is hidden there. Destroy it to enter the cavern.

What you can find there

  • The Sharkman Master: train and buy his upgrades to upgrade Sharkman Karate
Inside the Sealed Cavern, where the Sharkman Master is found.

Good to know

  • A bug sometimes prevents you from destroying the entrance with attacks: change servers, or simply go behind the entrance with a Flash Step
The Sealed Cavern's entrance, once revealed.

Update history

Island : Sealed Cavern·Released : Update 27.3

  1. Update 27.3 vers septembre 2025 Release
    • Added to the game.

    See update 27.3

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Party RealmPirate StarterPirate VillagePocket DimensionPort TownPrisonRed Hideoutred_legion HideoutRemote IslandRip Family HideoutRip_Family x Red_Legion ArenaSea of TreatsSealed CavernSecond SeaSecret LaboratorySecret TempleSkylandsSnow MountainSubmerged IslandSwan's RoomTemple of TimeThird SeaTiki OutpostUnderwater CityUpper SkylandsSee all 85 pages →