Current Prices
About LEGO Underwater Adventure
Explore an ocean world filled with coral reefs, ancient monuments and sunken treasures in this 310-piece underwater adventure. The set recreates the aquatic biomes from Minecraft with detailed builds including an ocean monument, underwater ruins, and a treasure-filled shipwreck.
Seven minifigures bring the depths to life: Steve equipped for underwater exploration, a Deep Sea Diver, a drowned zombie, a friendly dolphin, tropical fish, and two types of guardian - the standard guardian and the imposing elder guardian. Steve navigates using a boat and map while the dolphin serves as his guide through the coral-filled waters.
Combat and Exploration Features
The guardians feature missile-launching mechanisms for authentic underwater battles, while the drowned carries its signature trident. Steve comes equipped with essential gear including a sword, axe and spyglass for exploration. A treasure chest filled with gold and emeralds provides the reward for successful deep-sea expeditions.
Build Specifications
The completed model measures 20 cm wide, 7 cm high and 9 cm deep. The modular design allows for rearrangement of the ocean floor elements, letting builders customise their underwater landscape. Suitable for ages 8 and up, the set captures the exploration and combat elements that define Minecraft's ocean biomes.
Where to Buy LEGO Underwater Adventure for the Best Price
We've been tracking prices for this set since May 2026. The recommended retail price is £24.99. It's currently available from 1 retailer, with Lego offering the best price at £24.99. The lowest price we've ever recorded was £24.99 at Lego in May 2026. This set hasn't been released yet — it's expected to become available 1st june 2026.
Set Details
- Set Number
- 21598
- Pieces
- 310
- Release
- 1st June 2026
- Theme
- Minecraft®
- RRP
- £24.99
- Price per Piece
- 0.08p






