Update 27.4, called Submerged Expansion, is the fifth week of the Summer Expansion. It raises the maximum level to 2800 and doubles the fishing level cap (from 50 to 100), with a new underwater island extension, 
Submerged Island. It also brings a complete rework of the 
Bomb fruit, thirteen new fish, and a new event, the 
Golden Whirlpool Event.
How to get it
Released on September 20, 2025, as part of the Summer Expansion (week 5).
Level Caps
- Maximum level: 2750 -> 2800
- Maximum fishing level: 50 -> 100
New Features
- Reworked
Blox Fruit: Bomb - New island extension: Submerged Island
- New enemies:
High Disciple and 
Grand Devotee - New NPC:
Tournament Master - New event: Golden Whirlpool Event
New Fish
Thirteen species are added to fishing:
Golden Carp
Starfish (Red)
Starfish (Yellow)
Starfish (Green)
Starfish (Blue)
Starfish (Pink)
Starfish (Purple)
Lumo Whale
Swamp Lurker
Levi
Turtle
Deepsea Octopus
Deepsea SquidNew Bomb Skins
- Nuclear
- Thermite
- Azura
Other Changes
- Minor rework of the stash interface in the
Inventory.
Updates