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Giant rock crab

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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 target them gives the message "Invalid target."

Giant Rock Crabs are good droppers of charms, as they drop 3 of them at a time. They also drop various black equipment (platebody and claws), worth a decent sum of coins. They are the only droppers of rock-shell parts, which are needed to create Rock-shell armour.

LocationsEdit

ChaosTunnels entrances

Use the middle south entrance just east of the wizard who teleports player to the Abyss. This is labelled entrance number 2 and goes directly to the giant rock crabs.

StrategyEdit

old
Due to an update, the information in this article may be out-of-date.
Reason: Evolution of combat

You can help improve this page by editing it.


Giant Rock Crabs are extremely resistant to Melee and Ranged attacks, and thus are only effectively killed using Magic.

A notably effective and economic way to kill Giant Rock Crabs is the Black Salamander, or the Polypore Staff. The Black Salamander's magic attack, and the Polypore staff's attack acts as a normal magic attack and takes advantage of their lower magic defence. Their magic defence is so low you can utilise high level defensive armour without losing much accuracy.

In the Chaos Tunnels, they will eventually lose aggression. When they do, just leave the cave via the rope exit. Then just go straight back down the crevice.

They are most vulnerable to fire-based spells.

Mage Gear is as follows:

Note: Another useful tactic is to use (Elite) Void knight equipment, preferably with a Deflector and a good mage robe top.

If you are using ice burst or barrage the arcane stream necklace is not as important here because magic damage boost adds only to the target you click on. The other 8 targets do not receive the damage boost from it or your staff, so you would be better off using a necklace with a prayer bonus.

If using burst or barrage spells the Staff of light is recommended despite the lower mage bonus (in comparison to Master wand, or Chaotic staff) given the fact that it gives free casts; when used in conjunction with Battle Robes, it has a 50% chance of saving runes when casting. Even when this effect doesn't activate, the Battle Robes themselves have a chance to save runes, effectively adding up to a 60% chance of saving runes. The Battle robes will, however, only last for 6 hours of combat after which they will need to be recharged (270 tokens).

Provided you are going to be bursting, a Tome of frost is recommended above items that provide a higher magic bonus. This is because rock lobsters have fairly low magic defence (thus the difference in offensive magic bonus is negligible), while the tome saves an inventory space and the need for Water runes.

RetreatEdit

The Giant Rock Crab is one of few monsters in RuneScape that will retreat from battle when they become critically wounded. One way to avoid this (in the southern room in the chaos tunnels) is to kill the eastern one first (using the safespot in the picture above). Then when picking up the drop from them you will have likely alerted a few other giant rock crabs. Go back to the safespot and two should follow you there, from there kill them. While you're killing them the one you first killed should spawn but not attack (unless you go beside it). Because he spawns the other two can't get out and are trapped, so they cannot retreat. After killing the first one, don't pick up the drop and proceed to kill the second one. This means that you will not alert the one that spawned and you will have another retreat free kill. This may be repeated indefinitely in this fashion.

DropsEdit

100%Edit

  Item Quantity Rarity GE Market Price
Bones Bones 1 1 Always 297

Runes/TalismansEdit

  Item Quantity Rarity GE Market Price
Water rune Water rune 1–39 2 Common 26–1,014
Earth rune Earth rune 2–37 2 Common 26–481
Air talisman Air talisman 1 3 Uncommon 119
Mind talisman Mind talisman 1 3 Uncommon 267
Fire talisman Fire talisman 1 3 Uncommon 3,215
Cosmic talisman Cosmic talisman 1 4 Rare 1,490
Body talisman Body talisman 1 4 Rare 216
Water talisman Water talisman 1 3 Uncommon 13,892
Earth talisman Earth talisman 1 3 Uncommon 3,084
Nature talisman Nature talisman 1 4 Rare 303
Chaos talisman Chaos talisman 1 3 Uncommon 960

Weaponry/ArmourEdit

  Item Quantity Rarity GE Market Price
Steel platebody Steel platebody 1 2 Common 1,040
Black claw Black claw 1 3 Uncommon [1] 415
Off-hand black claw Off-hand black claw 1 3 Uncommon [1] 1,796
Black platebody Black platebody 1 2 Common 1,948
Mithril hatchet Mithril hatchet 1 2 Common 122
Rock-shell gloves Rock-shell gloves 1 3 Uncommon 15,225
Rock-shell boots Rock-shell boots 1 3 Uncommon 3,119
Black warhammer Black warhammer 1 3 Uncommon 441
Off-hand black warhammer Off-hand black warhammer 1 3 Uncommon 360
Adamant longsword Adamant longsword 1 3 Uncommon 1,404
Adamant warhammer Adamant warhammer 1 4 Rare 2,611
  1. ^ a b Main hand and off hand claws are dropped together.

CharmsEdit

Charm drop percentages
No charms Gold charm Green charm Crimson charm Blue charm

30–33%

43–46%

9–11%

10–12%

3–4%

Represents 90% confidence range, based on a sample of 2,507 kills.
3 charms are dropped at a time.

Please add to the log (only if 50 or more creatures killed).


SeedsEdit

  Item Quantity Rarity GE Market Price
Poison ivy seed 5 Poison ivy seed 1 3 Uncommon 3
Belladonna seed 5 Belladonna seed 1 3 Uncommon 101
Herb seed 5 Guam seed 1 3 Uncommon 3
Herb seed 5 Marrentill seed 1 3 Uncommon 3
Herb seed 5 Tarromin seed 1 3 Uncommon 1
Herb seed 5 Harralander seed 1 3 Uncommon 10
Herb seed 5 Toadflax seed 1 4 Rare 1,778
Herb seed 5 Ranarr seed 1 4 Rare 1,412
Herb seed 5 Irit seed 1 4 Rare 358
Herb seed 5 Avantoe seed 1 4 Rare 3,535
Herb seed 5 Snapdragon seed 1 4 Rare 2,319
Herb seed 5 Cadantine seed 1 4 Rare 856
Herb seed 5 Lantadyme seed 1 4 Rare 43,320
Herb seed 5 Dwarf weed seed 1 5 Very rare 60,726
Herb seed 5 Torstol seed 1 5 Very rare 23,156

HerbsEdit

  Item Quantity Rarity GE Market Price
Grimy guam Grimy guam 1 3 Uncommon 979
Grimy marrentill Grimy marrentill 1 3 Uncommon 83
Grimy tarromin Grimy tarromin 1 3 Uncommon 34
Grimy harralander Grimy harralander 1 3 Uncommon 186
Grimy ranarr Grimy ranarr 1 4 Rare 3,654
Grimy irit Grimy irit 1 4 Rare 2,794
Grimy avantoe Grimy avantoe 1 4 Rare 4,749
Grimy kwuarm Grimy kwuarm 1 4 Rare 3,713
Grimy cadantine Grimy cadantine 1 4 Rare 1,955
Grimy lantadyme Grimy lantadyme 1 4 Rare 10,325
Grimy dwarf weed Grimy dwarf weed 1 4 Rare 12,357

OtherEdit

  Item Quantity Rarity GE Market Price
Coins 100 Coins 27, 28, 42, 70, 137 2 Common Not sold
Raw lobster Raw lobster 1 2 Common 285
Raw bass Raw bass 1 2 Common 439
Tinderbox Tinderbox 1 2 Common 325
Casket Casket 1 4 Rare 8,850
Rock-shell splinter Rock-shell splinter 1 3 Uncommon 12,013
Rock-shell chunk Rock-shell chunk 1 4 Rare 5,628
Rock-shell shard Rock-shell shard 1 4 Rare 10,442
Clue scroll Clue scroll (medium) 1 5 Very rare Not sold
Ancient effigy Starved ancient effigy 1 5 Very rare Not sold

Rare drop table dropsEdit

This monster has access to the rare drop table.
The ring of wealth is not required to access the table.
Show/hide rare drop table
Item Quantity Rarity GE Market Price
Coins 250 Coins 250 – 450; 3,000;
9,000; 10,000; 12,000
2 Common Not sold
Uncut sapphire Uncut sapphire 1 2 Common 1,368
Uncut emerald Uncut emerald 1 2 Common 2,997
Uncut ruby Uncut ruby 1 2 Common 3,806
Uncut diamond Uncut diamond 1 3 Uncommon 6,277
Loop half of a key Loop half of a key 1 3 Uncommon 19,487
Tooth half of a key Tooth half of a key 1 3 Uncommon 43,434
Uncut dragonstone Uncut dragonstone 1 4 Rare 15,516
Dragonstone Dragonstone 1 4 Rare 10,710
Dragon dagger Dragon dagger 1 3 Uncommon 16,438
Rune battleaxe Rune battleaxe 1 4 Rare 23,920
Rune javelin Rune javelin 5 4 Rare 880
Adamant javelin Adamant javelin 20 5 Very rare 1,060
Rune 2h sword Rune 2h sword 1 5 Very rare 37,386
Rune spear Rune spear 1 5 Very rare 11,311
Dragon spear Dragon spear 1 5 Very rare 35,975
Dragon dagger Dragon dagger 50 (noted) 5 Very rare 821,900
Rune sq shield Rune sq shield 1 5 Very rare 22,436
Rune kiteshield Rune kiteshield 1 5 Very rare 32,191
Shield left half Shield left half 1 5 Very rare 64,290
Dragon helm Dragon helm 1 5 Very rare 59,080
Adamant bolts 5 Adamant bolts 200 3 Uncommon 22,200
Onyx bolts 5 Onyx bolts 150 4 Rare 1,265,850
Rune arrow 5 Rune arrow 150–200, 500 4 Rare 22,650–75,500
Battlestaff Battlestaff 200 (noted) 4 Rare 1,622,200
Air orb Air orb 1,000 (noted) 4 Rare 2,630,000
Fire orb Fire orb 1,000 (noted) 4 Rare 2,084,000
Vecna skull Vecna skull 1 5 Very rare 101,881
Water talisman Water talisman 1 3 Uncommon 13,892
Earth talisman Earth talisman 25–35 (noted) 3 Uncommon 77,100–107,940
Fire talisman Fire talisman 25–35 (noted) 3 Uncommon 80,375–112,525
Chaos talisman Chaos talisman 1 3 Uncommon 960
Nature talisman Nature talisman 1 3 Uncommon 303
Pure essence Pure essence 500–15,000 (noted) 3 Uncommon 9,000–270,000
Nature rune Nature rune 20–80 4 Rare 6,000–24,000
Soul rune Soul rune 20 4 Rare 3,280
Law rune Law rune 45 4 Rare 12,240
Death rune Death rune 50, 121 4 Rare 8,450–20,449
Blood rune Blood rune 50 4 Rare 16,100
Raw swordfish Raw swordfish 125–250, 1,000 (noted) 3 Uncommon 46,000–368,000
Raw shark Raw shark 250–500 (noted) 3 Uncommon 406,000–812,000
Big bones Big bones 150–500 (noted) 3 Uncommon 90,600–302,000
Coal Coal 150–7,500 (noted) 3 Uncommon 32,700–1,635,000
Adamantite ore Adamantite ore 150–800 (noted) 3 Uncommon 323,100–1,723,200
Silver ore Silver ore 100 (noted) 4 Rare 10,200
Runite ore Runite ore 100 (noted) 4 Rare 1,155,600
Adamant bar Adamant bar 1,000–7,000 (noted) 4 Rare 3,165,000–22,155,000
Rune bar Rune bar 1, 50, 150 (noted) 4 Rare 14,398–2,159,700
Clean ranarr Clean ranarr 33 (noted) 3 Uncommon 122,760
Clean toadflax Clean toadflax 25–250 (noted) 3 Uncommon 120,275–1,202,750
Clean snapdragon Clean snapdragon 30–120 (noted) 3 Uncommon 146,490–585,960
Clean torstol Clean torstol 10–100 (noted) 3 Uncommon 76,080–760,800
Saradomin brew (4) Saradomin brew (4) 250 (noted) 5 Very rare 178,250
Watermelon seed 5 Watermelon seed 3 3 Uncommon 5,913
Yew seed 5 Yew seed 1–50 4 Rare 68,615–3,430,750
Magic seed 5 Magic seed 1–7 4 Rare 153,198–1,072,386
Palm tree seed 5 Palm tree seed 10 4 Rare 1,001,410
Herb seed 5 Snapdragon seed 1 4 Rare 2,319
Herb seed 5 Torstol seed 1–31 4 Rare 23,156–717,836
Fellstalk seed 5 Fellstalk seed 2 4 Rare 2,242
Yew logs Yew logs 50–20,000 (noted) 4 Rare 23,450–9,380,000
Crystal triskelion fragment 1 Crystal triskelion fragment 1 1 5 Very rare Not sold
Crystal triskelion fragment 2 Crystal triskelion fragment 2 1 5 Very rare Not sold
Crystal triskelion fragment 3 Crystal triskelion fragment 3 1 5 Very rare Not sold
Brawling gloves (Melee) Brawling gloves (Melee) 1 5 Very rare Not sold
Brawling gloves (Magic) Brawling gloves (Magic) 1 5 Very rare Not sold
Brawling gloves (Ranged) Brawling gloves (Ranged) 1 5 Very rare Not sold
Brawling gloves (Agility) Brawling gloves (Agility) 1 5 Very rare Not sold
Brawling gloves (Cooking) Brawling gloves (Cooking) 1 5 Very rare Not sold
Brawling gloves (FM) Brawling gloves (FM) 1 5 Very rare Not sold
Brawling gloves (Fishing) Brawling gloves (Fishing) 1 5 Very rare Not sold
Brawling gloves (Hunter) Brawling gloves (Hunter) 1 5 Very rare Not sold
Brawling gloves (Mining) Brawling gloves (Mining) 1 5 Very rare Not sold
Brawling gloves (Prayer) Brawling gloves (Prayer) 1 5 Very rare Not sold
Brawling gloves (Smithing) Brawling gloves (Smithing) 1 5 Very rare Not sold
Brawling gloves (Thieving) Brawling gloves (Thieving) 1 5 Very rare Not sold
Brawling gloves (WC) Brawling gloves (WC) 1 5 Very rare Not sold

Universal dropsEdit

Universal drops are dropped by every monster outside of Daemonheim.
These drops are dropped alongside main drops.
  Item Quantity Rarity GE Market Price
Key token Key token 1 4 Rare Not sold

TriviaEdit

  • After the 27 May 2009 update, Giant Rock Crabs dropped Charms in groups of three instead of ten. This hidden update initially angered players, though complaints died down as the rate of charm dropping was also increased.

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