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This is an overview article which contains background information and cross-game comparisons. For game-specific information and stats, see the articles linked on the right.
Gameplay articles
Fallout 3Mirelurk
Mirelurk hunter
Mirelurk king
Swamplurk fo3plGametitle-FO3 PL
Swamplurk queen fo3plGametitle-FO3 PL
Fallout 4Mirelurk
Softshell mirelurk
Mirelurk hatchling
Mirelurk killclaw
Mirelurk queen
Mirelurk hunter
Mirelurk king
Legendary mirelurk killclaw
Legendary mirelurk king

Mirelurks are creatures appearing in Fallout 3 and Fallout 4. They are giant, radiation-mutated crustaceans.

General characteristicsEdit

In Fallout 3, mirelurks are mutated horseshoe crabs. Mirelurks will often disguise themselves to be a rock, then jump out and ambush their prey. They can deal massive damage and can absorb a great deal in return. Hatchlings are shown to be highly aggressive, as egg clutches will often have at least one or two hatch and proceed to attack the intruder.

In Fallout 4, mirelurks appear much more crab-like in appearance than those in Fallout 3, and their posture is generally crouched down to make their vulnerable faces harder to hit. Their shells also possess a mild reflective quality, as lasers are often seen ricocheting off them. The Mirelurk Queen displays a pronounced lobster tail.



Gameplay articles: Fallout 3, Fallout 4

A generic mirelurk, which lives close to the city's surroundings, or even the sewers.

Softshell mirelurkEdit

Gameplay article: Fallout 4

A weaker version of the mirelurk found in Fallout 4.

Mirelurk hatchlingEdit

Gameplay article: Fallout 4

Small, radroach-like creatures that spawn from the eggs of a mirelurk clutch.

Mirelurk hunterEdit

Mirelurk Hunter
Gameplay articles: Fallout 3, Fallout 4
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a lobster like creature that spits acid in splatter like shots

Mirelurk kingEdit

Mirelurk king
Gameplay articles: Fallout 3, Fallout 4

Male mirelurks, boss-like creatures.

Mirelurk queenEdit

Gameplay article: Fallout 4

Considerably larger and more dangerous than the other mirelurks. Holds up to more than 2 mini nuke attacks directly aimed at the torso. Also spawns at Fallout 4's "The Castle"



Can be found in the Nuka Cola factory in Fallout 3. They are blue because of taking in strontium isotope from the Nuka Cola. Their meat gives 10 action points.


Mirelurks appear in Fallout 3 and Fallout 4.

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