Giant Rock Crab

The RuneScape Wiki also has an article on: rsw:Giant Rock Crab

Giant Rock Crab
Released										1 August 2005 (Update)
Members										Yes
Combat level										137
Size										2x2
Examine										• No one likes crabs... especially really big ones! Disguised as a boulder: • Heavy rock!
Combat info
XP bonus										+10%
Max hit										9
Aggressive										Yes
Poison										No
Attack style										Crush
Attack speed
Combat stats
180					50					80					200					1					1
Aggressive stats
+0					+0					+0					+0					+0					+0
Defensive stats
+225						+200						+175						-10						+250
Immunities
Not immune to poison															Not immune to venom
Advanced data
Monster ID												2261,5940

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.

Locations

Location	Levels	Members	Spawns	Map
Waterbirth Island Dungeon	137		3	Maplink

Strategy

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.

If one wishes to use melee, the crabs can be killed deeper into the cave where there are several spawns in multi-way combat. These crabs will still drop their unique items on the drop table.

Drops

Drop rates estimated based on 1,715 kills from the Drop Rate Project, unless otherwise cited.

100%

	Item	Quantity	Rarity	Price	High Alch
	Bones	1	Always	91	0

Weapons and armour

	Item	Quantity	Rarity	Price	High Alch
	Steel platebody	1	5/128	842	1,200
	Black claws	1	5/128	557	216
	Black platebody	1	5/128	4,035	2,304
	Mithril axe	1	10/128	73	312
	Rock-shell gloves	1	2/128	723	390
	Rock-shell boots	1	2/128	315	390
	Black warhammer	1	5/128	378	588
	Adamant longsword	1	5/128	1,576	1,920

Runes

	Item	Quantity	Rarity	Price	High Alch
	Water rune	1–40	10/128	5–200	2–80
	Earth rune	1–40	10/128	5–200	2–80

Herbs

There is a 8/128 chance of rolling the herb drop table.

	Item	Quantity	Rarity	Price	High Alch
	Grimy guam leaf	1	1/64	39	7
	Grimy marrentill	1	1/85.3	19	8
	Grimy tarromin	1	1/113.8	110	9
	Grimy harralander	1	1/146.3	707	9
	Grimy ranarr weed	1	1/186.2	7,357	18
	Grimy irit leaf	1	1/256	648	10
	Grimy avantoe	1	1/341.3	1,395	10
	Grimy kwuarm	1	1/409.6	1,377	12
	Grimy cadantine	1	1/512	1,350	13
	Grimy lantadyme	1	1/682.7	1,180	13
	Grimy dwarf weed	1	1/682.7	712	14

Seeds

There is a 1/128 chance of rolling the rare seed drop table.

	Item	Quantity	Rarity	Price	High Alch
	Toadflax seed	1	1/642.7	1,793	6
	Irit seed	1	1/944	35	3
	Belladonna seed	1	1/974.5	79	106
	Poison ivy seed	1	1/1,373.1	13	99
	Avantoe seed	1	1/1,373.1	322	4
	Cactus seed	1	1/1,438.5	39	59
	Potato cactus seed	1	1/2,013.9	9	84
	Kwuarm seed	1	1/2,013.9	191	6
	Snapdragon seed	1	1/3,020.8	54,208	36
	Cadantine seed	1	1/4,315.4	564	4
	Lantadyme seed	1	1/6,041.6	422	5
	Snape grass seed	3	1/7,552	7,323	168
	Dwarf weed seed	1	1/10,069.3	215	3
	Torstol seed	1	1/15,104	49,360	42

Talismans

There is a 10/128 chance of rolling the talisman drop table.

	Item	Quantity	Rarity	Price	High Alch
	Air talisman	1	1/89.6	72	2
	Body talisman	1	1/89.6	1,303	2
	Earth talisman	1	1/89.6	517	2
	Fire talisman	1	1/89.6	5,565	2
	Mind talisman	1	1/89.6	3,775	2
	Water talisman	1	1/89.6	913	2
	Cosmic talisman	1	1/224	839	2
	Chaos talisman	1	1/298.7	578	2
	Nature talisman	1	1/298.7	927	2

Other

	Item	Quantity	Rarity	Price	High Alch
	Coins	1–140	10/128	1–140	1–140
	Raw lobster	1	10/128	112	42
	Raw bass	1	10/128	13	24
	Tinderbox	1	10/128	85	0
	Casket	1	2/128	751	30
	Rock-shell splinter	1	2/128	23,085	36
	Rock-shell chunk	1	2/128	12,231	36
	Rock-shell shard	1	2/128	20,563	36

Gem drop table

There is a 1/128 chance of rolling the gem drop table.

	Item	Quantity	Rarity	Price	High Alch
	Nothing	N/A	1/256.47; Never	N/A	N/A
	Uncut sapphire	1	1/512; 1/260	318	15
	Uncut emerald	1	1/1,024; 1/520	506	30
	Uncut ruby	1	1/2,048; 1/1,040	1,147	60
	Nature talisman	1	1/5,461.33; 1/2,773.33	927	2
	Uncut diamond	1	1/8,192; 1/4,160	2,627	120
	Loop half of key	1	1/16,384; 1/8,320	10,075	60
	Tooth half of key	1	1/16,384; 1/8,320	10,013	60
	Rune javelin	5	1/16,384; 1/8,320	875	1,200
	Rune spear	1	1/262,144; 1/15,600	11,843	12,480
	Shield left half	1	1/524,288; 1/31,200	65,203	66,000
	Dragon spear	1	1/699,050.67; 1/41,600	37,313	37,440

Tertiary

	Item	Quantity	Rarity	Price	High Alch
	Clue scroll (medium)	1	1/128	Not sold	12