Giant rock crab

OS

Giant rock crab

Release	1 August 2005 (Update)
Members	Yes
Examine
•"No one likes crabs... especially really big ones!" (after being approached) •"Heavy rock!" (when disguised as a boulder)
Combat info
Level	LP	XP	XP
95	3,400	399	131.6
Equipment XP (2H/MH & Armour/OH)
23 / 15 / 7
Aggressive		Poisonous
Offensive
Max hit
272	0	0	0
Style		Speed
		6 ticks (3.6s)
Combat levels
68 1 1 Accuracy 1409 0 0
Defensive
Armour		Weakness
1409	68
Affinities
90	55	45	65
Immunities

Defined properties:

All Life points: 3,400 Life points: 3,400 All Combat experience: 399 Combat experience: 399 All Release date: 1 August 2005 Release date: 1 August 2005 All Combat level: 95 Combat level: 95 All Is members only: true Is members only: true All NPC ID: 2452 NPC ID: 2452

[FAQ] • [doc]

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.

Locations

• In the Chaos Tunnels. Use the entrance in level 9 of the Wilderness, just east of the wizard who teleports players to the Abyss.
• In the Waterbirth Island Dungeon.

Strategy

Giant Rock Crabs have a fairly high resistance to Melee and Ranged attacks, and thus are only effectively killed using Magic.

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.

Retreat

The Giant Rock Crab is one of few monsters that will retreat from battle when they become critically wounded.

Drops

100% drops

	Item	Quantity	Rarity	GE price
	Bones	1	Always	266

Charms

No charm
2–3%	79–80%	9–10%	6–7%	2%
Represents a 90% confidence range based on a sample of 6,143 kills. 3 charms are dropped at a time. Add data to the log (requires JavaScript).

Main drops

	Item	Quantity	Rarity	GE price
	Water rune	1–39	Common	25–975
	Earth rune	1–40	Common	18–720
	Air talisman	1	Uncommon	498
	Mind talisman	1	Uncommon	203
	Fire talisman	1	Uncommon	209
	Cosmic talisman	1	Rare	1,030
	Body talisman	1	Rare	407
	Water talisman	1	Uncommon	2,528
	Earth talisman	1	Uncommon	185
	Nature talisman	1	Rare	1,473
	Chaos talisman	1	Uncommon	1,923
	Steel platebody	1	Common	1,956
	Black claw	1	Common	3,514
	Off-hand black claw	1	Common	1,840
	Black platebody	1	Common	6,443
	Mithril hatchet	1	Common	5,242
	Rock-shell gloves	1	Uncommon	5,762
	Rock-shell boots	1	Uncommon	5,329
	Black warhammer	1	Uncommon	3,812
	Off-hand black warhammer	1	Uncommon	2,278
	Adamant longsword	1	Uncommon	4,917
	Adamant warhammer	1	Rare	3,567
	Poison ivy seed	1	Uncommon	302
	Belladonna seed	1	Uncommon	1,007
	Guam seed	1	Uncommon	176
	Marrentill seed	1	Uncommon	179
	Tarromin seed	1	Uncommon	137
	Harralander seed	1	Uncommon	196
	Toadflax seed	1	Uncommon	9,872
	Ranarr seed	1	Rare	976
	Irit seed	1	Rare	1,018
	Avantoe seed	1	Rare	375
	Snapdragon seed	1	Rare	293
	Cadantine seed	1	Rare	1,438
	Lantadyme seed	1	Rare	726
	Kwuarm seed	1	Rare	12,857
	Dwarf weed seed	1	Very rare	822
	Torstol seed	1	Very rare	540
	Grimy guam	1	Uncommon	709
	Grimy marrentill	1	Uncommon	2,307
	Grimy tarromin	1	Uncommon	105
	Grimy harralander	1	Uncommon	741
	Grimy ranarr	1	Rare	1,860
	Grimy irit	1	Rare	5,008
	Grimy avantoe	1	Rare	1,043
	Grimy kwuarm	1	Rare	11,782
	Grimy cadantine	1	Rare	4,322
	Grimy lantadyme	1	Rare	7,551
	Grimy dwarf weed	1	Rare	8,476
	Coins	23–137	Common	23–137
	Raw lobster	1	Common	353
	Raw bass	1	Common	1,014
	Tinderbox	1	Common	474
	Casket	1	Rare	572
	Rock-shell splinter	1	Uncommon	3,534
	Rock-shell chunk	1	Rare	1,871
	Rock-shell shard	1	Rare	4,565

Tertiary drops

	Item	Quantity	Rarity	GE price
	Sealed clue scroll (medium)	1	Very rare	Not sold
	Starved ancient effigy	1	Very rare	Not sold

Rare drop table drops

This monster has access to the rare drop table.
Luck-enhancing items such as a ring of wealth or luck of the dwarves are not required to access the table.

Show/hide rare drop table
	Item	Quantity	Rarity	GE price
	Coins	250–500	Common	250–500
	Uncut sapphire	1	Common	809
	Uncut emerald	1	Common	2,555
	Uncut ruby	1	Common	1,842
	Uncut diamond	1	Common	4,843
	Uncut diamond	45–55 (noted)	Rare	217,935–266,365
	Loop half of a key	1	Common	11,053
	Tooth half of a key	1	Common	11,538
	Uncut dragonstone	1	Uncommon	12,077
	Uncut dragonstone	45–55 (noted)	Rare	543,465–664,235
	Dragon longsword	1	Common	56,212
	Dragon spear	1	Rare	35,861
	Battlestaff	180–220 (noted)	Rare	542,160–662,640
	Rune javelin	5	Rare	905
	Rune platebody	1	Uncommon	37,480
	Rune platebody	15–25 (noted)	Rare	562,200–937,000
	Shield left half	1	Rare	64,399
	Dragon helm	1	Uncommon	58,601
	Rune arrowheads	113–137	Common	14,916–18,084
	Onyx bolts	135–165	Very rare	1,003,725–1,226,775
	Chaos talisman	1	Rare	1,923
	Nature talisman	1	Rare	1,473
	Water talisman	65–82 (noted)	Rare	164,320–207,296
	Earth talisman	65–82 (noted)	Rare	12,025–15,170
	Fire talisman	25–35 (noted)	Rare	5,225–7,315
	Raw lobster	135–165 (noted)	Common	47,655–58,245
	Raw shark	225–275 (noted)	Uncommon	321,075–392,425
	Big bones	68–82 (noted)	Uncommon	13,804–16,646
	Dragon bones	180–220 (noted)	Rare	384,480–469,920
	Coal	200–1,100 (noted)	Uncommon	22,400–123,200
	Gold ore	90–110 (noted)	Common	52,830–64,570
	Adamantite ore	180–220 (noted)	Uncommon	40,860–49,940
	Adamant bar	14–16 (noted)	Common	24,654–28,176
	Adamant bar	135–165 (noted)	Rare	237,735–290,565
	Runite ore	90–110 (noted)	Rare	127,710–156,090
	Rune bar	3 (noted)	Common	8,955
	Rune bar	45–55 (noted)	Rare	134,325–164,175
	Grimy torstol	90–110 (noted)	Uncommon	485,010–592,790
	Grimy snapdragon	90–110 (noted)	Uncommon	161,010–196,790
	Super restore (4)	45–55 (noted)	Uncommon	125,910–153,890
	Prayer potion (4)	45–55 (noted)	Uncommon	130,950–160,050
	Lantadyme seed	14–16	Uncommon	10,164–11,616
	Dwarf weed seed	14–16	Uncommon	11,508–13,152
	Magic seed	4	Uncommon	209,856
	Palm tree seed	10	Rare	396,000
	Flax	450–550 (noted)	Common	43,200–52,800
	Molten glass	45–55 (noted)	Common	27,585–33,715
	Soft clay	450–550 (noted)	Uncommon	188,550–230,450
	Yew logs	68–82 (noted)	Uncommon	11,356–13,694
	Yew logs	675–825 (noted)	Rare	112,725–137,775
	Teak plank	45–55 (noted)	Uncommon	16,740–20,460
	Mahogany plank	270–330 (noted)	Rare	356,670–435,930
	Blurberry Special	1	Uncommon	12,008
	Vecna skull	1	Very rare*	124,871
	Hazelmere's signet ring	1	Very rare*	1,432,268,388
	Brawling gloves (Melee)	1	Very rare	Not sold
	Brawling gloves (Magic)	1	Very rare	Not sold
	Brawling gloves (Ranged)	1	Very rare	Not sold
	Brawling gloves (Agility)	1	Very rare	Not sold
	Brawling gloves (Cooking)	1	Very rare	Not sold
	Brawling gloves (FM)	1	Very rare	Not sold
	Brawling gloves (Fishing)	1	Very rare	Not sold
	Brawling gloves (Hunter)	1	Very rare	Not sold
	Brawling gloves (Mining)	1	Very rare	Not sold
	Brawling gloves (Prayer)	1	Very rare	Not sold
	Brawling gloves (Smithing)	1	Very rare	Not sold
	Brawling gloves (Thieving)	1	Very rare	Not sold
	Brawling gloves (WC)	1	Very rare	Not sold
	Crystal triskelion fragment 1	1	Very rare	Not sold
	Crystal triskelion fragment 2	1	Very rare	Not sold
	Crystal triskelion fragment 3	1	Very rare	Not sold

Universal drops

Universal drops are dropped by nearly every monster outside of Daemonheim.

These drops are dropped alongside main drops.

	Item	Quantity	Rarity	GE price
	Key token	1	Rare	Not sold
	Mimic kill token	1	Very rare	5,575

Trivia

• 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.