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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 73


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 71
Mind talisman Mind talisman 1 Rare 320
Fire talisman Fire talisman 1 Rare 1,603
Cosmic talisman Cosmic talisman 1 Rare 470
Body talisman Body talisman 1 Rare 300
Water talisman Water talisman 1 Rare 150
Earth talisman Earth talisman 1 Rare 193


Item Quantity Rarity GE market price
Steel platebody Steel platebody 1 Uncommon 1,008
Black claws Black claws 1 Uncommon 10,027
Black platebody Black platebody 1 Uncommon 3,095
Mithril axe Mithril axe 1 Uncommon 205
Rock-shell gloves Rock-shell gloves 1 Uncommon 2,362
Rock-shell boots Rock-shell boots 1 Uncommon 8,516
Black warhammer Black warhammer 1 Rare 376
Adamant longsword Adamant longsword 1 Rare 1,771
Adamant warhammer Adamant warhammer 1 Rare 2,256


Item Quantity Rarity GE market price
Poison ivy seed 5 Poison ivy seed 1 Uncommon 817
Belladonna seed 5 Belladonna seed 1 Uncommon 45
Herb seed 5 Guam seed 1 Uncommon 10
Herb seed 5 Marrentill seed 1 Uncommon 8
Herb seed 5 Tarromin seed 1 Uncommon 14
Herb seed 5 Harralander seed 1 Uncommon 46
Herb seed 5 Toadflax seed 1 Rare 275
Herb seed 5 Ranarr seed 1 Rare 28,994
Herb seed 5 Irit seed 1 Rare 58
Herb seed 5 Avantoe seed 1 Rare 1,256
Herb seed 5 Snapdragon seed 1 Rare 36,783
Herb seed 5 Cadantine seed 1 Rare 538
Herb seed 5 Lantadyme seed 1 Rare 1,033
Herb seed 5 Dwarf weed seed 1 Very rare 390
Herb seed 5 Torstol seed 1 Very rare 20,842


Item Quantity Rarity GE market price
Grimy guam leaf Grimy guam leaf 1 Uncommon 8
Grimy marrentill Grimy marrentill 1 Uncommon 10
Grimy tarromin Grimy tarromin 1 Uncommon 113
Grimy harralander Grimy harralander 1 Uncommon 485
Grimy ranarr weed Grimy ranarr weed 1 Rare 7,020
Grimy irit leaf Grimy irit leaf 1 Rare 998
Grimy avantoe Grimy avantoe 1 Rare 2,115
Grimy kwuarm Grimy kwuarm 1 Rare 1,945
Grimy cadantine Grimy cadantine 1 Rare 1,413
Grimy lantadyme Grimy lantadyme 1 Rare 1,962
Grimy dwarf weed Grimy dwarf weed 1 Rare 884


Item Quantity Rarity GE market price
Coins 100 Coins 27; 28; 42; 70; 137 Common Not sold
Raw lobster Raw lobster 1 Common 235
Raw bass Raw bass 1 Common 218
Tinderbox Tinderbox 1 Common 148
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) 26,546
Casket Casket 1 Rare 1,086
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 1,604
Loop half of key Loop half of key 1 Common 11,418
Tooth half of key Tooth half of key 1 Common 15,982
Uncut emerald Uncut emerald 1 Uncommon 937
Uncut ruby Uncut ruby 1 Uncommon 1,976
Nature talisman Nature talisman 1 Uncommon 1,810
Chaos talisman Chaos talisman 1 Uncommon 226
Nature rune Nature rune 67 Uncommon 15,946
Runite bar Runite bar 1 Uncommon 13,563
Rune spear Rune spear 1 Rare 12,485
Rune battleaxe Rune battleaxe 1 Rare 27,428
Rune 2h sword Rune 2h sword 1 Rare 40,733
Uncut diamond Uncut diamond 1 Rare 3,872
Rune javelin Rune javelin 5 Rare 580
Silver ore Silver ore 100 (noted) Rare 7,700
Adamant javelin Adamant javelin 20 Rare 1,300
Rune sq shield Rune sq shield 1 Rare 24,963
Steel arrow 5 Steel arrow 150 Rare 5,100
Rune arrow 5 Rune arrow 42 Rare 4,158
Law rune Law rune 45 Rare 8,505
Death rune Death rune 45 Rare 14,265
Dragonstone Dragonstone 1 Rare 15,955
Rune kiteshield Rune kiteshield 1 Rare 36,540
Dragon med helm Dragon med helm 1 Rare 63,816
Shield left half Shield left half 1 Very rare 73,636
Dragon spear Dragon spear 1 Very rare 42,575

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