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 Not immune Not immune
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 51


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 45
Mind talisman Mind talisman 1 Rare 299
Fire talisman Fire talisman 1 Rare 2,015
Cosmic talisman Cosmic talisman 1 Rare 526
Body talisman Body talisman 1 Rare 394
Water talisman Water talisman 1 Rare 147
Earth talisman Earth talisman 1 Rare 153


Item Quantity Rarity GE market price
Steel platebody Steel platebody 1 Uncommon 994
Black claws Black claws 1 Uncommon 4,509
Black platebody Black platebody 1 Uncommon 4,136
Mithril axe Mithril axe 1 Uncommon 161
Rock-shell gloves Rock-shell gloves 1 Uncommon 848
Rock-shell boots Rock-shell boots 1 Uncommon 1,905
Black warhammer Black warhammer 1 Rare 398
Adamant longsword Adamant longsword 1 Rare 1,746
Adamant warhammer Adamant warhammer 1 Rare 2,220


Item Quantity Rarity GE market price
Poison ivy seed 5 Poison ivy seed 1 Uncommon 682
Belladonna seed 5 Belladonna seed 1 Uncommon 47
Herb seed 5 Guam seed 1 Uncommon 4
Herb seed 5 Marrentill seed 1 Uncommon 1
Herb seed 5 Tarromin seed 1 Uncommon 6
Herb seed 5 Harralander seed 1 Uncommon 25
Herb seed 5 Toadflax seed 1 Rare 635
Herb seed 5 Ranarr seed 1 Rare 31,145
Herb seed 5 Irit seed 1 Rare 31
Herb seed 5 Avantoe seed 1 Rare 1,009
Herb seed 5 Snapdragon seed 1 Rare 41,183
Herb seed 5 Cadantine seed 1 Rare 444
Herb seed 5 Lantadyme seed 1 Rare 1,229
Herb seed 5 Dwarf weed seed 1 Very rare 366
Herb seed 5 Torstol seed 1 Very rare 50,565


Item Quantity Rarity GE market price
Grimy guam leaf Grimy guam leaf 1 Uncommon 12
Grimy marrentill Grimy marrentill 1 Uncommon 14
Grimy tarromin Grimy tarromin 1 Uncommon 120
Grimy harralander Grimy harralander 1 Uncommon 520
Grimy ranarr weed Grimy ranarr weed 1 Rare 6,345
Grimy irit leaf Grimy irit leaf 1 Rare 953
Grimy avantoe Grimy avantoe 1 Rare 2,159
Grimy kwuarm Grimy kwuarm 1 Rare 2,424
Grimy cadantine Grimy cadantine 1 Rare 1,957
Grimy lantadyme Grimy lantadyme 1 Rare 1,807
Grimy dwarf weed Grimy dwarf weed 1 Rare 939


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 129
Tinderbox Tinderbox 1 Common 59
Rock-shell splinter Rock-shell splinter 1 Uncommon (1/64) 23,314
Rock-shell chunk Rock-shell chunk 1 Uncommon (1/64) 11,574
Rock-shell shard Rock-shell shard 1 Uncommon (1/64) 22,678
Casket Casket 1 Rare 847
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
Loop half of key Loop half of key 1 Common 9,271
Tooth half of key Tooth half of key 1 Common 21,541
Chaos talisman Chaos talisman 1 Common 418
Uncut sapphire Uncut sapphire 1 Common 791
Uncut emerald Uncut emerald 1 Uncommon 836
Uncut ruby Uncut ruby 1 Uncommon 1,641
Nature talisman Nature talisman 1 Uncommon 425
Steel arrow 5 Steel arrow 150 Uncommon 4,350
Rune arrow 5 Rune arrow 42 Uncommon 3,234
Rune javelin Rune javelin 5 Uncommon 730
Adamant javelin Adamant javelin 20 Uncommon 1,320
Runite bar Runite bar 1 Uncommon 12,505
Nature rune Nature rune 67 Uncommon 14,606
Law rune Law rune 45 Uncommon 9,765
Death rune Death rune 45 Uncommon 10,530
Rune battleaxe Rune battleaxe 1 Uncommon 24,586
Rune 2h sword Rune 2h sword 1 Uncommon 37,982
Rune sq shield Rune sq shield 1 Uncommon 22,634
Silver ore Silver ore 100 (noted) Uncommon 6,800
Dragonstone Dragonstone 1 Uncommon 18,461
Uncut diamond Uncut diamond 1 Rare 3,252
Dragon med helm Dragon med helm 1 Rare 58,796
Rune kiteshield Rune kiteshield 1 Rare 31,980
Rune spear Rune spear 1 Rare 12,033
Shield left half Shield left half 1 Rare 65,278
Dragon spear Dragon spear 1 Rare 44,636

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