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Rock Crab

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Rock Crab
Rock crab (hidden)
Release date 2 November 2004 (Update)
Members? Yes
Combat level 13
Always drops Nothing
No one likes crabs...
Disguised as rocks:
A rocky outcrop.
Combat info
Hitpoints 50
Aggressive no
Poisonous No
Max hit 1
Weakness Crush
Attack Styles
Slayer-icon Slayer info
Slayer level 1
Slayer XP 50
Category Unknown (edit)
Assigned by
Unknown (edit)
Combat-icon Combat stats
Attack-icon Strength-icon Defence-icon Ranged-icon Magic-icon
1 1 1 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
+0 +0 +0 +0 +0
Other bonuses Immunities
Strength-icon RangedStrength-icon Attack-icon Poison hitsplat Venom hitsplat
+0  ? +0 No No
Attack speed
Monster attack speed 4
Multiple rock crabs

​Rock Crabs are aggressive monsters that look like harmless rocks while disguised, but attack when walked by. Unlike most other enemies and NPCs, rock crabs are not marked with yellow dots on the player's minimap; this is probably due to the crabs' appearance, which camouflages them as rocks.

Players can tell if a rock is a rock crab by looking at the rock's shape; rock crabs are tall oval shaped while normal rocks in their area are mostly in large clusters of shattered pieces.

Rock crabs become unaggressive if the player has not left the surrounding area in a certain amount of time (roughly between ten and twenty-five minutes). To make the crabs aggressive again, exit the surrounding area (halfway to the entrance to the village in Rellekka, or by entering and exiting the entrance to Keldagrim) and enter again. Can also find one Rock Crab that will be aggressive, kill it then you can continue killing other crabs. As they are "dormant" until "awoken" by a passing player, rock crabs cannot be attacked until they are made aggressive once more.

They hit fairly low, but low level players should bring food. Rock crabs are excellent for training at all combat levels, due to their low Defence and high Hitpoints, which makes them easy to kill.

Rellekka Rock Crabs Edit


The spot to avoid cannon fire in Rellekka.

CAUTION: Dwarf multicannons are commonly used here, which makes training for other players difficult and unenjoyable; however, there is a way to avoid the cannon's fire. If a player moves to the west-most part of the multi-combat zone, most cannon fire can be avoided; there are three rock crab spawn near this location, which makes it a decent spot. Although the cannon's fire can be avoided, it is best to switch to another world.

Locations Edit



Item Quantity Rarity GE market price
Bronze pickaxe Bronze pickaxe 1 Common 80
Iron pickaxe Iron pickaxe 1 Common 171
Bronze axe Bronze axe 1 Uncommon 82
Iron javelin Iron javelin Unknown Uncommon 8

Runes and TalismanEdit

Item Quantity Rarity GE market price
Fire rune Fire rune 7 Common 35
Nature rune Nature rune 4 Uncommon 1,108
Chaos rune Chaos rune 1 Rare 102


Item Quantity Rarity GE market price
Coins 250 Coins 4–413 Common Not sold
Oyster Oyster 1–2 Common 62–124
Seaweed Seaweed 1–5 (noted) Common 55–275
Edible seaweed Edible seaweed 2 Common 62
Oyster pearl Oyster pearl 1 Common 94
Empty oyster Empty oyster 1 Common Not sold
Spinach roll Spinach roll 1 Uncommon Not sold
Knife Knife 1 Uncommon 38
Opal bolt tips 5 Opal bolt tips 5 Uncommon 45
Iron ore Iron ore 1 Uncommon 118
Coal Coal 2 Uncommon 350
Copper ore Copper ore 3 Uncommon 75
Tin ore Tin ore 3 Uncommon 120
Fishing bait Fishing bait 1–10 Uncommon 4–40
Jade bolt tips 5 Jade bolt tips 1 Rare 7
Limpwurt root Limpwurt root 1 Rare 1,968
Grimy ranarr weed Grimy ranarr weed 1 Rare 7,683
Grimy avantoe Grimy avantoe 1 Rare 2,040
Herb seed 5 Tarromin seed 1 Rare 18
Herb seed 5 Ranarr seed 1 Rare 30,032
Clue scroll (easy) Clue scroll (easy) 1 Rare Not sold
Casket Casket 1 Rare 1,849

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
Uncut sapphire Uncut sapphire 1 Common 1,849
Loop half of key Loop half of key 1 Common 8,242
Tooth half of key Tooth half of key 1 Common 27,869
Uncut emerald Uncut emerald 1 Uncommon 1,879
Uncut ruby Uncut ruby 1 Uncommon 1,908
Nature talisman Nature talisman 1 Uncommon 492
Chaos talisman Chaos talisman 1 Uncommon 307
Nature rune Nature rune 67 Uncommon 18,559
Runite bar Runite bar 1 Uncommon 13,687
Rune spear Rune spear 1 Rare 12,404
Rune battleaxe Rune battleaxe 1 Rare 26,843
Rune 2h sword Rune 2h sword 1 Rare 41,336
Uncut diamond Uncut diamond 1 Rare 3,744
Rune javelin Rune javelin 5 Rare 645
Silver ore Silver ore 100 (noted) Rare 8,900
Adamant javelin Adamant javelin 20 Rare 1,000
Rune sq shield Rune sq shield 1 Rare 24,950
Steel arrow 5 Steel arrow 150 Rare 4,950
Rune arrow 5 Rune arrow 42 Rare 4,662
Law rune Law rune 45 Rare 9,225
Death rune Death rune 45 Rare 11,655
Dragonstone Dragonstone 1 Rare 25,874
Rune kiteshield Rune kiteshield 1 Rare 36,202
Dragon med helm Dragon med helm 1 Rare 63,808
Shield left half Shield left half 1 Very rare 73,798
Dragon spear Dragon spear 1 Very rare 43,290

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