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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 58


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 62
Mind talisman Mind talisman 1 Rare 392
Fire talisman Fire talisman 1 Rare 1,491
Cosmic talisman Cosmic talisman 1 Rare 340
Body talisman Body talisman 1 Rare 503
Water talisman Water talisman 1 Rare 170
Earth talisman Earth talisman 1 Rare 256


Item Quantity Rarity GE market price
Steel platebody Steel platebody 1 Uncommon 1,039
Black claws Black claws 1 Uncommon 16,557
Black platebody Black platebody 1 Uncommon 2,629
Mithril axe Mithril axe 1 Uncommon 184
Rock-shell gloves Rock-shell gloves 1 Uncommon 19,384
Rock-shell boots Rock-shell boots 1 Uncommon 23,061
Black warhammer Black warhammer 1 Rare 391
Adamant longsword Adamant longsword 1 Rare 1,713
Adamant warhammer Adamant warhammer 1 Rare 2,265


Item Quantity Rarity GE market price
Poison ivy seed 5 Poison ivy seed 1 Uncommon 1,146
Belladonna seed 5 Belladonna seed 1 Uncommon 47
Herb seed 5 Guam seed 1 Uncommon 10
Herb seed 5 Marrentill seed 1 Uncommon 10
Herb seed 5 Tarromin seed 1 Uncommon 12
Herb seed 5 Harralander seed 1 Uncommon 109
Herb seed 5 Toadflax seed 1 Rare 358
Herb seed 5 Ranarr seed 1 Rare 20,384
Herb seed 5 Irit seed 1 Rare 50
Herb seed 5 Avantoe seed 1 Rare 337
Herb seed 5 Snapdragon seed 1 Rare 25,685
Herb seed 5 Cadantine seed 1 Rare 518
Herb seed 5 Lantadyme seed 1 Rare 504
Herb seed 5 Dwarf weed seed 1 Very rare 1,139
Herb seed 5 Torstol seed 1 Very rare 34,647


Item Quantity Rarity GE market price
Grimy guam leaf Grimy guam leaf 1 Uncommon 8
Grimy marrentill Grimy marrentill 1 Uncommon 11
Grimy tarromin Grimy tarromin 1 Uncommon 70
Grimy harralander Grimy harralander 1 Uncommon 519
Grimy ranarr weed Grimy ranarr weed 1 Rare 6,812
Grimy irit leaf Grimy irit leaf 1 Rare 1,237
Grimy avantoe Grimy avantoe 1 Rare 1,996
Grimy kwuarm Grimy kwuarm 1 Rare 3,887
Grimy cadantine Grimy cadantine 1 Rare 2,131
Grimy lantadyme Grimy lantadyme 1 Rare 1,815
Grimy dwarf weed Grimy dwarf weed 1 Rare 1,855


Item Quantity Rarity GE market price
Coins 100 Coins 27; 28; 42; 70; 137 Common Not sold
Raw lobster Raw lobster 1 Common 126
Raw bass Raw bass 1 Common 361
Tinderbox Tinderbox 1 Common 128
Rock-shell splinter Rock-shell splinter 1 Uncommon (1/64) 25,963
Rock-shell chunk Rock-shell chunk 1 Uncommon (1/64) 12,163
Rock-shell shard Rock-shell shard 1 Uncommon (1/64) 30,023
Casket Casket 1 Rare 1,257
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 1,574
Loop half of key Loop half of key 1 Common 6,807
Tooth half of key Tooth half of key 1 Common 23,426
Uncut emerald Uncut emerald 1 Uncommon 1,517
Uncut ruby Uncut ruby 1 Uncommon 2,316
Nature talisman Nature talisman 1 Uncommon 565
Chaos talisman Chaos talisman 1 Uncommon 275
Nature rune Nature rune 67 Uncommon 18,224
Runite bar Runite bar 1 Uncommon 13,770
Rune spear Rune spear 1 Rare 12,964
Rune battleaxe Rune battleaxe 1 Rare 27,040
Rune 2h sword Rune 2h sword 1 Rare 41,222
Uncut diamond Uncut diamond 1 Rare 3,965
Rune javelin Rune javelin 5 Rare 685
Silver ore Silver ore 100 (noted) Rare 8,000
Adamant javelin Adamant javelin 20 Rare 1,100
Rune sq shield Rune sq shield 1 Rare 25,054
Steel arrow 5 Steel arrow 150 Rare 5,100
Rune arrow 5 Rune arrow 42 Rare 4,830
Law rune Law rune 45 Rare 9,540
Death rune Death rune 45 Rare 13,410
Dragonstone Dragonstone 1 Rare 20,514
Rune kiteshield Rune kiteshield 1 Rare 36,232
Dragon med helm Dragon med helm 1 Rare 63,589
Shield left half Shield left half 1 Very rare 73,917
Dragon spear Dragon spear 1 Very rare 39,517

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