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 78


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 50
Mind talisman Mind talisman 1 Rare 324
Fire talisman Fire talisman 1 Rare 1,478
Cosmic talisman Cosmic talisman 1 Rare 282
Body talisman Body talisman 1 Rare 523
Water talisman Water talisman 1 Rare 136
Earth talisman Earth talisman 1 Rare 167


Item Quantity Rarity GE market price
Steel platebody Steel platebody 1 Uncommon 1,006
Black claws Black claws 1 Uncommon 7,454
Black platebody Black platebody 1 Uncommon 3,103
Mithril axe Mithril axe 1 Uncommon 191
Rock-shell gloves Rock-shell gloves 1 Uncommon 1,107
Rock-shell boots Rock-shell boots 1 Uncommon 4,541
Black warhammer Black warhammer 1 Rare 394
Adamant longsword Adamant longsword 1 Rare 1,723
Adamant warhammer Adamant warhammer 1 Rare 2,243


Item Quantity Rarity GE market price
Poison ivy seed 5 Poison ivy seed 1 Uncommon 929
Belladonna seed 5 Belladonna seed 1 Uncommon 49
Herb seed 5 Guam seed 1 Uncommon 16
Herb seed 5 Marrentill seed 1 Uncommon 16
Herb seed 5 Tarromin seed 1 Uncommon 31
Herb seed 5 Harralander seed 1 Uncommon 82
Herb seed 5 Toadflax seed 1 Rare 544
Herb seed 5 Ranarr seed 1 Rare 31,012
Herb seed 5 Irit seed 1 Rare 83
Herb seed 5 Avantoe seed 1 Rare 645
Herb seed 5 Snapdragon seed 1 Rare 40,439
Herb seed 5 Cadantine seed 1 Rare 267
Herb seed 5 Lantadyme seed 1 Rare 971
Herb seed 5 Dwarf weed seed 1 Very rare 313
Herb seed 5 Torstol seed 1 Very rare 21,621


Item Quantity Rarity GE market price
Grimy guam leaf Grimy guam leaf 1 Uncommon 6
Grimy marrentill Grimy marrentill 1 Uncommon 16
Grimy tarromin Grimy tarromin 1 Uncommon 120
Grimy harralander Grimy harralander 1 Uncommon 524
Grimy ranarr weed Grimy ranarr weed 1 Rare 7,739
Grimy irit leaf Grimy irit leaf 1 Rare 1,019
Grimy avantoe Grimy avantoe 1 Rare 2,448
Grimy kwuarm Grimy kwuarm 1 Rare 2,681
Grimy cadantine Grimy cadantine 1 Rare 1,630
Grimy lantadyme Grimy lantadyme 1 Rare 1,942
Grimy dwarf weed Grimy dwarf weed 1 Rare 902


Item Quantity Rarity GE market price
Coins 100 Coins 27; 28; 42; 70; 137 Common Not sold
Raw lobster Raw lobster 1 Common 225
Raw bass Raw bass 1 Common 268
Tinderbox Tinderbox 1 Common 53
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 977
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 1,005
Loop half of key Loop half of key 1 Common 7,381
Tooth half of key Tooth half of key 1 Common 17,079
Uncut emerald Uncut emerald 1 Uncommon 852
Uncut ruby Uncut ruby 1 Uncommon 1,684
Nature talisman Nature talisman 1 Uncommon 802
Chaos talisman Chaos talisman 1 Uncommon 254
Nature rune Nature rune 67 Uncommon 13,869
Runite bar Runite bar 1 Uncommon 12,564
Rune spear Rune spear 1 Rare 12,096
Rune battleaxe Rune battleaxe 1 Rare 24,535
Rune 2h sword Rune 2h sword 1 Rare 37,914
Uncut diamond Uncut diamond 1 Rare 3,414
Rune javelin Rune javelin 5 Rare 565
Silver ore Silver ore 100 (noted) Rare 7,600
Adamant javelin Adamant javelin 20 Rare 1,360
Rune sq shield Rune sq shield 1 Rare 22,632
Steel arrow 5 Steel arrow 150 Rare 5,100
Rune arrow 5 Rune arrow 42 Rare 3,822
Law rune Law rune 45 Rare 10,035
Death rune Death rune 45 Rare 10,710
Dragonstone Dragonstone 1 Rare 14,946
Rune kiteshield Rune kiteshield 1 Rare 32,230
Dragon med helm Dragon med helm 1 Rare 59,234
Shield left half Shield left half 1 Very rare 65,474
Dragon spear Dragon spear 1 Very rare 37,358

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.