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Giant Rock Crab

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Giant rock crab
Giant Rock Crab
Release date 1 August 2005 (Update)
Members? Yes
Combat level 137
Always drops Bones
No one likes crabs... especially really big ones!
Disguised as a boulder:
Heavy rock!
Combat info
Hitpoints 180
Aggressive Yes
Poisonous No
Max hit 9
Weakness Magic
Attack Styles
Melee (crush)
Slayer-icon Slayer info
Not assigned
Combat-icon Combat stats
Attack-icon Strength-icon Defence-icon Ranged-icon Magic-icon
50 80 200 1 1
Attack-icon Aggressive stats
White dagger White scimitar White warhammer Magic-icon Ranged-icon
+0 +0 +0 +0 +0
Defence-icon Defensive stats
White dagger White scimitar White warhammer Magic-icon Ranged-icon
+225 +200 +175 -10 +250
Other bonuses Immunities
Strength-icon RangedStrength-icon Attack-icon Poison hitsplat Venom hitsplat
+0  ? +0 No No
Attack speed
Monster attack speed 6

Giant rock crabs are massive versions of the weaker Rock crab. They lie in wait for prey, disguised as large boulders. When approached, they attack, unless they have become tolerant, in which case they remain as "boulders" - attempting to cast a spell on them gives the message "You can't attack this NPC."

Giant rock crabs are only initially aggressive if they are approached while dormant. Once they are moving and the targeted player is out of range, they stop being aggressive and will ignore players that don't attack them. They eventually become dormant boulders again after a while if they are not attacked.



The giant rock crab is one of few monsters in RuneScape that will retreat from battle when they become critically wounded. This can be troublesome, as they are found in a single-way combat area. This can be prevented by attacking them while their back is turned to a nearby wall, so that they move away from the player and back up into the wall. If they move too far away, the player will follow them and risk being attacked by another rock crab. There are several protruding sections of the walls in the area that can be used as safespots which are ideal as the crabs' main weakness is magic.



Item Quantity Rarity GE market price
Bones Bones 1 Always 70


Item Quantity Rarity GE market price
Water rune Water rune 1–39 Uncommon 5–195
Earth rune Earth rune 2–37 Uncommon 10–185
Air talisman Air talisman 1 Rare 64
Mind talisman Mind talisman 1 Rare 310
Fire talisman Fire talisman 1 Rare 2,421
Cosmic talisman Cosmic talisman 1 Rare 640
Body talisman Body talisman 1 Rare 336
Water talisman Water talisman 1 Rare 164
Earth talisman Earth talisman 1 Rare 197


Item Quantity Rarity GE market price
Steel platebody Steel platebody 1 Uncommon 1,010
Black claws Black claws 1 Uncommon 9,539
Black platebody Black platebody 1 Uncommon 3,173
Mithril axe Mithril axe 1 Uncommon 241
Rock-shell gloves Rock-shell gloves 1 Uncommon 1,886
Rock-shell boots Rock-shell boots 1 Uncommon 7,036
Black warhammer Black warhammer 1 Rare 413
Adamant longsword Adamant longsword 1 Rare 1,747
Adamant warhammer Adamant warhammer 1 Rare 2,303


Item Quantity Rarity GE market price
Poison ivy seed 5 Poison ivy seed 1 Uncommon 876
Belladonna seed 5 Belladonna seed 1 Uncommon 42
Herb seed 5 Guam seed 1 Uncommon 18
Herb seed 5 Marrentill seed 1 Uncommon 10
Herb seed 5 Tarromin seed 1 Uncommon 23
Herb seed 5 Harralander seed 1 Uncommon 57
Herb seed 5 Toadflax seed 1 Rare 325
Herb seed 5 Ranarr seed 1 Rare 29,072
Herb seed 5 Irit seed 1 Rare 73
Herb seed 5 Avantoe seed 1 Rare 814
Herb seed 5 Snapdragon seed 1 Rare 35,991
Herb seed 5 Cadantine seed 1 Rare 343
Herb seed 5 Lantadyme seed 1 Rare 1,125
Herb seed 5 Dwarf weed seed 1 Very rare 442
Herb seed 5 Torstol seed 1 Very rare 17,974


Item Quantity Rarity GE market price
Grimy guam leaf Grimy guam leaf 1 Uncommon 9
Grimy marrentill Grimy marrentill 1 Uncommon 15
Grimy tarromin Grimy tarromin 1 Uncommon 109
Grimy harralander Grimy harralander 1 Uncommon 485
Grimy ranarr weed Grimy ranarr weed 1 Rare 7,533
Grimy irit leaf Grimy irit leaf 1 Rare 922
Grimy avantoe Grimy avantoe 1 Rare 2,275
Grimy kwuarm Grimy kwuarm 1 Rare 1,941
Grimy cadantine Grimy cadantine 1 Rare 1,142
Grimy lantadyme Grimy lantadyme 1 Rare 1,729
Grimy dwarf weed Grimy dwarf weed 1 Rare 879


Item Quantity Rarity GE market price
Coins 100 Coins 27; 28; 42; 70; 137 Common Not sold
Raw lobster Raw lobster 1 Common 291
Raw bass Raw bass 1 Common 251
Tinderbox Tinderbox 1 Common 192
Rock-shell splinter Rock-shell splinter 1 Uncommon (1/64) 25,050
Rock-shell chunk Rock-shell chunk 1 Uncommon (1/64) 11,407
Rock-shell shard Rock-shell shard 1 Uncommon (1/64) 25,451
Casket Casket 1 Rare 1,205
Clue scroll (medium) Clue scroll (medium) 1 Very rare Not sold

Rare drop table

In addition to the drops above, this monster also has access to the rare drop table.

Show/hide rare drop table
Item Quantity Rarity GE market price
Coins 1000 Coins 3,000 Common Not sold
Uncut sapphire Uncut sapphire 1 Common 1,437
Loop half of key Loop half of key 1 Common 10,242
Tooth half of key Tooth half of key 1 Common 15,958
Uncut emerald Uncut emerald 1 Uncommon 827
Uncut ruby Uncut ruby 1 Uncommon 1,805
Nature talisman Nature talisman 1 Uncommon 1,022
Chaos talisman Chaos talisman 1 Uncommon 474
Nature rune Nature rune 67 Uncommon 15,276
Runite bar Runite bar 1 Uncommon 12,554
Rune spear Rune spear 1 Rare 12,116
Rune battleaxe Rune battleaxe 1 Rare 24,671
Rune 2h sword Rune 2h sword 1 Rare 38,053
Uncut diamond Uncut diamond 1 Rare 3,544
Rune javelin Rune javelin 5 Rare 565
Silver ore Silver ore 100 (noted) Rare 7,800
Adamant javelin Adamant javelin 20 Rare 1,400
Rune sq shield Rune sq shield 1 Rare 22,482
Steel arrow 5 Steel arrow 150 Rare 5,550
Rune arrow 5 Rune arrow 42 Rare 4,662
Law rune Law rune 45 Rare 8,640
Death rune Death rune 45 Rare 16,335
Dragonstone Dragonstone 1 Rare 16,766
Rune kiteshield Rune kiteshield 1 Rare 32,519
Dragon med helm Dragon med helm 1 Rare 59,302
Shield left half Shield left half 1 Very rare 70,453
Dragon spear Dragon spear 1 Very rare 37,899

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