Guardian

HostileHealth: 30 (15 hearts)JavaBedrock

Quick answer: In and around ocean monuments - the only place they spawn.

How to find Guardian

In and around ocean monuments - the only place they spawn.

Spawn conditions: Only in ocean monuments, in water (flowing or still). In Java they spawn less often in open-sky water than in covered areas; in Bedrock they use 25 fixed spawn columns.

Drops

ItemAmountNotes
Prismarine Shard0-2 (up to 5 with Looting III)Prismarine blocks, sea lanterns
Prismarine Crystals0-140% chance; sea lanterns
Raw Cod0-140% chance; cooked if killed by fire

How to kill Guardian

Break line of sight behind a pillar: its laser charges slowly. Guardians inflict retaliatory damage when you hit them in melee, so mind the spikes. Fight out of water or with Respiration and Depth Strider.

Behavior

Swims around attacking players, squid, glow squid and axolotls with a slow-charging laser. Spikes extend when it is not swimming. Survives out of water, hopping erratically. Source: minecraft.wiki Guardian.

Taming and breeding

Cannot be tamed or bred. Axolotls attack guardians and help you raid monuments.

Related mobs: AxolotlDrownedElder Guardian