Giant Rock Crab

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12
Giant Rock Crab
Released1 August 2005 (Update)
MembersYes
Combat level137
Size2x2
ExamineNo one likes crabs... especially really big ones!
League regionFremennik Fremennik
Combat info
XP bonus+10%
Max hit9
AggressiveYes
PoisonousNo
Attack styleCrush
Attack speed4 ticks (2.4 seconds)
Respawn time50 ticks (30 seconds)
Combat stats
180508020011
Aggressive stats
Monster attack bonusMonster strength bonusMonster magic strength bonusMonster ranged strength bonus
+0+0+0+0+0+0
Melee defence
+225+200+175
Magic defence
No elemental weakness
-10No elemental weakness
Ranged defence
LightStandardHeavy
+250+250+250
Immunities
PoisonNot immune
VenomNot immune
CannonsNot immune
ThrallsNot immune
Advanced data
Monster ID2261

12
Boulder
Released1 August 2005 (Update)
MembersYes
QuestNone
LocationWaterbirth Island Dungeon
League regionFremennik Fremennik
GenderNone
OptionsNone
ExamineHeavy rock!
Advanced data
NPC ID2262

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 League region
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Level(s)137

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MonsterGiant Rock Crab
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MonsterGiant Rock Crab
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Level(s)137

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Level(s)137

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MonsterGiant Rock Crab
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X/Y: 2523,10166

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MonsterGiant Rock Crab
Level(s)137

X/Y: 2526,10163

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Level(s)137

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MonsterGiant Rock Crab
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X/Y: 2540,10162

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MonsterGiant Rock Crab
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Fremennik Fremennik
Waterbirth Island Dungeon sublevel 2[1]137Members5<maplink group="pins" align="center" text="Maplink" plane="2" y="4368" x="1810" zoom="2" mapID="-1"> {"features":[{"type":"Feature","geometry":{"coordinates":[1803.5,4365.5],"type":"Point"},"properties":{"mapID":"-1","providerID":0,"group":"pins","icon":"redPin","plane":"2","description":"
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Level(s)137

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Fremennik Fremennik
Waterbirth Island Dungeon sublevel 3[1]137Members6<maplink group="pins" align="center" text="Maplink" plane="3" y="4403" x="1839" zoom="2" mapID="-1"> {"features":[{"type":"Feature","geometry":{"coordinates":[1829.5,4407.5],"type":"Point"},"properties":{"mapID":"-1","providerID":0,"group":"pins","icon":"redPin","plane":"3","description":"
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Level(s)137

X/Y: 1829,4407

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Level(s)137

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X/Y: 1842,4405

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Fremennik Fremennik
Waterbirth Island Dungeon sublevel 5[1]137Members3<maplink group="pins" align="center" text="Maplink" plane="0" y="9746" x="2644" zoom="2" mapID="25"> {"features":[{"type":"Feature","geometry":{"coordinates":[2631.5,9751.5],"type":"Point"},"properties":{"mapID":"25","providerID":0,"group":"pins","icon":"redPin","plane":"0","description":"
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Level(s)137

X/Y: 2631,9751

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Level(s)137

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Level(s)137

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Fremennik Fremennik
  1. ^ 1.0 1.1 1.2 1.3 In Waterbirth Island Dungeon a partner or a pet rock is required to open the door

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 samples from the Drop Rate Project, unless otherwise cited.

100%

Item Quantity Rarity Price High Alch
Bones.png: Giant Rock Crab drops Bones with rarity Always in quantity 1Bones1Always1130

Weapons and armour

Item Quantity Rarity Price High Alch
Steel platebody.png: Giant Rock Crab drops Steel platebody with rarity 5/128 in quantity 1Steel platebody15/1289151,200
Black claws.png: Giant Rock Crab drops Black claws with rarity 5/128 in quantity 1Black claws15/1286,827216
Black platebody.png: Giant Rock Crab drops Black platebody with rarity 5/128 in quantity 1Black platebody15/1282,6442,304
Mithril axe.png: Giant Rock Crab drops Mithril axe with rarity 10/128 in quantity 1Mithril axe110/128113312
Rock-shell gloves.png: Giant Rock Crab drops Rock-shell gloves with rarity 2/128 in quantity 1Rock-shell gloves12/128616390
Rock-shell boots.png: Giant Rock Crab drops Rock-shell boots with rarity 2/128 in quantity 1Rock-shell boots12/128341390
Black warhammer.png: Giant Rock Crab drops Black warhammer with rarity 5/128 in quantity 1Black warhammer15/128488588
Adamant longsword.png: Giant Rock Crab drops Adamant longsword with rarity 5/128 in quantity 1Adamant longsword15/1281,5971,920

Runes

Item Quantity Rarity Price High Alch
Water rune.png: Giant Rock Crab drops Water rune with rarity 10/128 in quantity 1-40Water rune1–4010/1285–2002–80
Earth rune.png: Giant Rock Crab drops Earth rune with rarity 10/128 in quantity 1-40Earth rune1–4010/1285–2002–80

Herbs

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

Item Quantity Rarity Price High Alch
Grimy guam leaf.png: Giant Rock Crab drops Grimy guam leaf with rarity 1/64 in quantity 1Grimy guam leaf11/643267
Grimy marrentill.png: Giant Rock Crab drops Grimy marrentill with rarity 1/85.3 in quantity 1Grimy marrentill11/85.33988
Grimy tarromin.png: Giant Rock Crab drops Grimy tarromin with rarity 1/113.8 in quantity 1Grimy tarromin11/113.83799
Grimy harralander.png: Giant Rock Crab drops Grimy harralander with rarity 1/146.3 in quantity 1Grimy harralander11/146.36769
Grimy ranarr weed.png: Giant Rock Crab drops Grimy ranarr weed with rarity 1/186.2 in quantity 1Grimy ranarr weed11/186.26,70918
Grimy irit leaf.png: Giant Rock Crab drops Grimy irit leaf with rarity 1/256 in quantity 1Grimy irit leaf11/2561,47210
Grimy avantoe.png: Giant Rock Crab drops Grimy avantoe with rarity 1/341.3 in quantity 1Grimy avantoe11/341.33,26310
Grimy kwuarm.png: Giant Rock Crab drops Grimy kwuarm with rarity 1/409.6 in quantity 1Grimy kwuarm11/409.63,57412
Grimy cadantine.png: Giant Rock Crab drops Grimy cadantine with rarity 1/512 in quantity 1Grimy cadantine11/5122,98713
Grimy lantadyme.png: Giant Rock Crab drops Grimy lantadyme with rarity 1/682.7 in quantity 1Grimy lantadyme11/682.71,86113
Grimy dwarf weed.png: Giant Rock Crab drops Grimy dwarf weed with rarity 1/682.7 in quantity 1Grimy dwarf weed11/682.72,03614

Seeds

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

Item Quantity Rarity Price High Alch
Toadflax seed.png: Giant Rock Crab drops Toadflax seed with rarity 1/642.7 in quantity 1Toadflax seed11/642.71,4066
Irit seed.png: Giant Rock Crab drops Irit seed with rarity 1/944 in quantity 1Irit seed11/944633
Belladonna seed.png: Giant Rock Crab drops Belladonna seed with rarity 1/974.5 in quantity 1Belladonna seed11/974.5175106
Poison ivy seed.png: Giant Rock Crab drops Poison ivy seed with rarity 1/1,373.1 in quantity 1Poison ivy seed11/1,373.11699
Avantoe seed.png: Giant Rock Crab drops Avantoe seed with rarity 1/1,373.1 in quantity 1Avantoe seed11/1,373.12,4864
Cactus seed.png: Giant Rock Crab drops Cactus seed with rarity 1/1,438.5 in quantity 1Cactus seed11/1,438.56759
Potato cactus seed.png: Giant Rock Crab drops Potato cactus seed with rarity 1/2,013.9 in quantity 1Potato cactus seed11/2,013.91284
Kwuarm seed.png: Giant Rock Crab drops Kwuarm seed with rarity 1/2,013.9 in quantity 1Kwuarm seed11/2,013.93,8206
Snapdragon seed.png: Giant Rock Crab drops Snapdragon seed with rarity 1/3,020.8 in quantity 1Snapdragon seed11/3,020.841,65936
Cadantine seed.png: Giant Rock Crab drops Cadantine seed with rarity 1/4,315.4 in quantity 1Cadantine seed11/4,315.43,9874
Lantadyme seed.png: Giant Rock Crab drops Lantadyme seed with rarity 1/6,041.6 in quantity 1Lantadyme seed11/6,041.64515
Snape grass seed.png: Giant Rock Crab drops Snape grass seed with rarity 1/7,552 in quantity 3Snape grass seed31/7,55222,698168
Dwarf weed seed.png: Giant Rock Crab drops Dwarf weed seed with rarity 1/10,069.3 in quantity 1Dwarf weed seed11/10,069.38833
Torstol seed.png: Giant Rock Crab drops Torstol seed with rarity 1/15,104 in quantity 1Torstol seed11/15,1046,38142

Talismans

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

Item Quantity Rarity Price High Alch
Air talisman.png: Giant Rock Crab drops Air talisman with rarity 1/89.6 in quantity 1Air talisman11/89.61102
Body talisman.png: Giant Rock Crab drops Body talisman with rarity 1/89.6 in quantity 1Body talisman11/89.61,7172
Earth talisman.png: Giant Rock Crab drops Earth talisman with rarity 1/89.6 in quantity 1Earth talisman11/89.62402
Fire talisman.png: Giant Rock Crab drops Fire talisman with rarity 1/89.6 in quantity 1Fire talisman11/89.63,8102
Mind talisman.png: Giant Rock Crab drops Mind talisman with rarity 1/89.6 in quantity 1Mind talisman11/89.61,2732
Water talisman.png: Giant Rock Crab drops Water talisman with rarity 1/89.6 in quantity 1Water talisman11/89.61392
Cosmic talisman.png: Giant Rock Crab drops Cosmic talisman with rarity 1/224 in quantity 1Cosmic talisman11/2242592
Chaos talisman.png: Giant Rock Crab drops Chaos talisman with rarity 1/298.7 in quantity 1Chaos talisman11/298.73092
Nature talisman.png: Giant Rock Crab drops Nature talisman with rarity 1/298.7 in quantity 1Nature talisman11/298.73282

Other

Item Quantity Rarity Price High Alch
Coins_100.png: Giant Rock Crab drops Coins with rarity 10/128 in quantity 1-140Coins1–14010/1281–1401–140
Raw lobster.png: Giant Rock Crab drops Raw lobster with rarity 10/128 in quantity 1Raw lobster110/1287442
Raw bass.png: Giant Rock Crab drops Raw bass with rarity 10/128 in quantity 1Raw bass110/1281824
Tinderbox.png: Giant Rock Crab drops Tinderbox with rarity 10/128 in quantity 1Tinderbox110/128940
Casket.png: Giant Rock Crab drops Casket with rarity 2/128 in quantity 1Casket12/1282,24230
Rock-shell splinter.png: Giant Rock Crab drops Rock-shell splinter with rarity 2/128 in quantity 1Rock-shell splinter12/12817,57836
Rock-shell chunk.png: Giant Rock Crab drops Rock-shell chunk with rarity 2/128 in quantity 1Rock-shell chunk12/12810,59036
Rock-shell shard.png: Giant Rock Crab drops Rock-shell shard with rarity 2/128 in quantity 1Rock-shell shard12/12816,32636

Gem drop table

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

Item Quantity Rarity Price High Alch
This does not exist.NothingN/A1/256.47; Never[d 1]N/AN/A
Uncut sapphire.png: Giant Rock Crab drops Uncut sapphire with rarity 1/512 in quantity 1Uncut sapphire11/512; 1/260[d 2]23815
Uncut emerald.png: Giant Rock Crab drops Uncut emerald with rarity 1/1,024 in quantity 1Uncut emerald11/1,024; 1/520[d 2]46330
Uncut ruby.png: Giant Rock Crab drops Uncut ruby with rarity 1/2,048 in quantity 1Uncut ruby11/2,048; 1/1,040[d 2]98860
Nature talisman.png: Giant Rock Crab drops Nature talisman with rarity 1/5,461.33 in quantity 1Nature talisman11/5,461.33; 1/2,773.33[d 2]3282
Uncut diamond.png: Giant Rock Crab drops Uncut diamond with rarity 1/8,192 in quantity 1Uncut diamond11/8,192; 1/4,160[d 2]2,142120
Loop half of key.png: Giant Rock Crab drops Loop half of key with rarity 1/16,384 in quantity 1Loop half of key11/16,384; 1/8,320[d 2]11,91960
Tooth half of key.png: Giant Rock Crab drops Tooth half of key with rarity 1/16,384 in quantity 1Tooth half of key11/16,384; 1/8,320[d 2]11,92560
Rune javelin.png: Giant Rock Crab drops Rune javelin with rarity 1/16,384 in quantity 5Rune javelin51/16,384; 1/8,320[d 2]9501,200
Rune spear.png: Giant Rock Crab drops Rune spear with rarity 1/262,144 in quantity 1Rune spear11/262,144; 1/15,600[d 2][d 3]11,87112,480
Shield left half.png: Giant Rock Crab drops Shield left half with rarity 1/524,288 in quantity 1Shield left half11/524,288; 1/31,200[d 2][d 3]65,39466,000
Dragon spear.png: Giant Rock Crab drops Dragon spear with rarity 1/699,050.67 in quantity 1Dragon spear11/699,050.67; 1/41,600[d 2][d 3]38,85437,440
  1. ^ The "nothing" drop is removed while wearing a ring of wealth.
  2. ^ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 The drop rate is increased while wearing a ring of wealth due to the "nothing" drop being removed.
  3. ^ 3.0 3.1 3.2 Only dropped if Legends' Quest has been finished; if not, a talisman is dropped instead.

Tertiary

Item Quantity Rarity Price High Alch
Clue scroll (medium).png: Giant Rock Crab drops Clue scroll (medium) with rarity 1/128 in quantity 1Clue scroll (medium)11/128[d 1][1]Not sold12
  1. ^ The medium clue scroll drop rate increases to 1/121 after unlocking the medium Combat Achievements rewards tier.

References

  1. ^