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Health 800 (♥×400)
Damage 12 (♥×6)
Environment L'Borean: Hydro Towers
Hostility Hostile
XP Xp Orb.png 87
ID aoa3:Hydrolisk
Version added 1.1.1

Hydrolisk is one of the bosses from L'Borean.


Hydrolisk is spawned by using a Pure Water Stone on a Hydro Table. It will despawn if the player gets too far away from it, or if the difficulty is set to Peaceful.


Hydrolisk will pursue players that come within 16 blocks of it and attack with melee. It cannot pathfind, and will always try and go straight for the player. The Hydrolisk will always float on water, even if its target is below it.

The Hydrolisk boss fight is divided into two phases:

Phase 1[]

After being spawned, Hydrolisk will have a shield, and cannot be damaged normally. During this phase, Hydrolisk has a 1 in 80 chance every tick to spawn a Hydrolon.

The player has to take out the Hydrolons to receive Hydro Stones. The player must then right-click the Hydro Stones on Hydrolisk to deplete its shield. The shield's current health is noted in the boss bar on the top of the screen. Once the shield is depleted completely, the second phase will begin.

Phase 2[]

In the second phase, Hydrolisk will no longer spawn Hydrolons. It has a 1 in 120 chance every tick to place down a water block.

In both phases it heals 1 (♥×0.5) health every tick while standing in water.


Unique drops
Item Quantity Chance Notes
Lborean Table - 100.0%
The above pool is rolled 1 time
Nothing - 13.2% Chance is decreased with each level of luck and/or looting.
Water Rune.pngWater Rune 6-20 10.6%
Kinetic Rune.pngKinetic Rune 6-20 10.6%
Borean Tokens.pngBorean Tokens 5-32 9.5%
Silver Coin.pngSilver Coin 1-5 9.3%
Magic Repair Dust.pngMagic Repair Dust 1-3 7.9%
Pufferfish.pngPufferfish 3-5 7.9%
Bubble Berries.pngBubble Berries 16-32 7.7%
Chitin.pngChitin 5-15 6.9%
Armour Plating.pngArmour Plating 2-6 6.3%
Sharp Claw.pngSharp Claw 1 6.1%
Gold Coin.pngGold Coin 1-2 4.0%
The above pool is rolled 1-2 times, with an additional roll per point of Luck
Nothing - 68.5% Chance is decreased with each level of luck and/or looting.
Reef Staff.pngReef Staff 1 6.8%
Hydroplate Helmet.pngHydroplate Helmet 1 6.2%
Hydroplate Chestplate.pngHydroplate Chestplate 1 6.2%
Hydroplate Leggings.pngHydroplate Leggings 1 6.2%
Hydroplate Boots.pngHydroplate Boots 1 6.2%
The above pool is rolled 1 time
32pxHydrolisk Trophy 1 100.0%
The above pool is rolled 1 time

Related Advancements[]

Icon Name Description Obtaining Parent ID Hidden
Advancement challenge bg.pngTrophy.png Lobster Mousse Defeat Hydrolisk, the giant invertebrate See description Let The Water Run aoa3:lborean/lobster_mousse No


  • It was a minigame mob in 1.7.10, in which it had by far the most health of any non-boss mob at that point.


Version Information
1.1.1 Introduced as a minigame mob.
3.0 Now a boss instead of a minigame mob.