LEGO 21598 Underwater Adventure Instructions
Minecraft • 2026
Instruction videos
LEGO 21598 set details
Set overview
LEGO 21598 Underwater Adventure is a 310-piece LEGO Minecraft set released in 2026 from the Minifig-scale range with 3 minifigures.
This page includes one step-by-step instruction video for building Underwater Adventure.
Official LEGO building instructions
Open the official LEGO instruction page to select and download the available PDF manual books.
VIEW OFFICIAL LEGO MANUALS