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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 61


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 80
Mind talisman Mind talisman 1 Rare 483
Fire talisman Fire talisman 1 Rare 1,874
Cosmic talisman Cosmic talisman 1 Rare 457
Body talisman Body talisman 1 Rare 524
Water talisman Water talisman 1 Rare 142
Earth talisman Earth talisman 1 Rare 199


Item Quantity Rarity GE market price
Steel platebody Steel platebody 1 Uncommon 1,010
Black claws Black claws 1 Uncommon 8,653
Black platebody Black platebody 1 Uncommon 2,543
Mithril axe Mithril axe 1 Uncommon 260
Rock-shell gloves Rock-shell gloves 1 Uncommon 1,483
Rock-shell boots Rock-shell boots 1 Uncommon 5,791
Black warhammer Black warhammer 1 Rare 389
Adamant longsword Adamant longsword 1 Rare 1,733
Adamant warhammer Adamant warhammer 1 Rare 2,269


Item Quantity Rarity GE market price
Poison ivy seed 5 Poison ivy seed 1 Uncommon 978
Belladonna seed 5 Belladonna seed 1 Uncommon 41
Herb seed 5 Guam seed 1 Uncommon 22
Herb seed 5 Marrentill seed 1 Uncommon 16
Herb seed 5 Tarromin seed 1 Uncommon 34
Herb seed 5 Harralander seed 1 Uncommon 95
Herb seed 5 Toadflax seed 1 Rare 237
Herb seed 5 Ranarr seed 1 Rare 37,015
Herb seed 5 Irit seed 1 Rare 91
Herb seed 5 Avantoe seed 1 Rare 764
Herb seed 5 Snapdragon seed 1 Rare 42,363
Herb seed 5 Cadantine seed 1 Rare 302
Herb seed 5 Lantadyme seed 1 Rare 895
Herb seed 5 Dwarf weed seed 1 Very rare 336
Herb seed 5 Torstol seed 1 Very rare 18,088


Item Quantity Rarity GE market price
Grimy guam leaf Grimy guam leaf 1 Uncommon 7
Grimy marrentill Grimy marrentill 1 Uncommon 17
Grimy tarromin Grimy tarromin 1 Uncommon 137
Grimy harralander Grimy harralander 1 Uncommon 485
Grimy ranarr weed Grimy ranarr weed 1 Rare 8,624
Grimy irit leaf Grimy irit leaf 1 Rare 1,079
Grimy avantoe Grimy avantoe 1 Rare 2,515
Grimy kwuarm Grimy kwuarm 1 Rare 2,703
Grimy cadantine Grimy cadantine 1 Rare 1,527
Grimy lantadyme Grimy lantadyme 1 Rare 2,044
Grimy dwarf weed Grimy dwarf weed 1 Rare 953


Item Quantity Rarity GE market price
Coins 100 Coins 27; 28; 42; 70; 137 Common Not sold
Raw lobster Raw lobster 1 Common 300
Raw bass Raw bass 1 Common 240
Tinderbox Tinderbox 1 Common 166
Rock-shell splinter Rock-shell splinter 1 Uncommon (1/64) 24,092
Rock-shell chunk Rock-shell chunk 1 Uncommon (1/64) 11,547
Rock-shell shard Rock-shell shard 1 Uncommon (1/64) 24,688
Casket Casket 1 Rare 1,172
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 1,534
Loop half of key Loop half of key 1 Common 9,479
Tooth half of key Tooth half of key 1 Common 17,508
Uncut emerald Uncut emerald 1 Uncommon 908
Uncut ruby Uncut ruby 1 Uncommon 1,859
Nature talisman Nature talisman 1 Uncommon 987
Chaos talisman Chaos talisman 1 Uncommon 401
Nature rune Nature rune 67 Uncommon 13,869
Runite bar Runite bar 1 Uncommon 12,751
Rune spear Rune spear 1 Rare 12,568
Rune battleaxe Rune battleaxe 1 Rare 27,250
Rune 2h sword Rune 2h sword 1 Rare 38,428
Uncut diamond Uncut diamond 1 Rare 3,782
Rune javelin Rune javelin 5 Rare 600
Silver ore Silver ore 100 (noted) Rare 7,600
Adamant javelin Adamant javelin 20 Rare 1,380
Rune sq shield Rune sq shield 1 Rare 24,628
Steel arrow 5 Steel arrow 150 Rare 5,400
Rune arrow 5 Rune arrow 42 Rare 4,284
Law rune Law rune 45 Rare 8,010
Death rune Death rune 45 Rare 12,645
Dragonstone Dragonstone 1 Rare 16,234
Rune kiteshield Rune kiteshield 1 Rare 36,374
Dragon med helm Dragon med helm 1 Rare 62,390
Shield left half Shield left half 1 Very rare 74,318
Dragon spear Dragon spear 1 Very rare 43,497

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