Rock Crab

Hidden Exposed

Rock crab (hidden)

Rock crab (exposed)

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 Yes (to all levels)
Poisonous No
Max hit 1
Weakness None
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 Not immune Not immune
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. Another way to tell is by right clicking on them. If the text colour is yellow, it is a Rock Crab. If the text is blue, it is just a prop.

Rock Crabs become docile 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. You 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.

Rock Crabs are excellent for training at all combat levels due to their low Defence and high Hitpoints, though low level players should consider bringing food. Rock Crabs used to be a popular melee training monster until the release of Sand Crabs, and the subsequent release of Ammonite Crabs, which are now more preferred options for training.


Rellekka Rock CrabsEdit


The spot to avoid cannon fire in Rellekka.

CAUTION: Dwarf multicannons may be used here, unlike with the other types of crabs commonly used for training, This makes training for other players difficult. There is, however, 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 spawns 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 when faced with overcrowding.



Item Quantity Rarity GE market price
Bronze pickaxe Bronze pickaxe 1 Common 34
Iron pickaxe Iron pickaxe 1 Common 127
Bronze axe Bronze axe 1 Uncommon 53

Runes and talismanEdit

Item Quantity Rarity GE market price
Fire rune Fire rune 7 Common 35
Nature rune Nature rune 4 Uncommon 832
Chaos rune Chaos rune 1 Rare 98


Item Quantity Rarity GE market price
Coins 250 Coins 4–413 Common Not sold
Oyster Oyster 1–2 Common 54–108
Seaweed Seaweed 1–5 Common 59–295
Oyster pearl Oyster pearl 1 Common 36
Empty oyster Empty oyster 1 Common Not sold
Spinach roll Spinach roll 1 Uncommon Not sold
Knife Knife 1 Uncommon 92
Opal bolt tips 5 Opal bolt tips 5 Uncommon 20
Iron ore Iron ore 1 Uncommon 119
Coal Coal 2 Uncommon 354
Copper ore Copper ore 3 Uncommon 144
Tin ore Tin ore 3 Uncommon 174
Fishing bait Fishing bait 1–10 Uncommon 4–40
Edible seaweed Edible seaweed 2 Rare 30
Jade bolt tips 5 Jade bolt tips 1 Rare 6
Limpwurt root Limpwurt root 1 Rare 234
Grimy ranarr weed Grimy ranarr weed 1 Rare 7,676
Grimy avantoe Grimy avantoe 1 Rare 2,552
Herb seed 5 Tarromin seed 1 Rare 8
Herb seed 5 Ranarr seed 1 Rare 41,087
Clue scroll (easy) Clue scroll (easy) 1 Rare Not sold
Casket Casket 1 Rare 952

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
Loop half of key Loop half of key 1 Common 6,526
Tooth half of key Tooth half of key 1 Common 15,583
Chaos talisman Chaos talisman 1 Common 182
Uncut sapphire Uncut sapphire 1 Common 857
Uncut emerald Uncut emerald 1 Uncommon 829
Uncut ruby Uncut ruby 1 Uncommon 1,575
Nature talisman Nature talisman 1 Uncommon 422
Steel arrow 5 Steel arrow 150 Uncommon 5,250
Rune arrow 5 Rune arrow 42 Uncommon 3,318
Rune javelin Rune javelin 5 Uncommon 660
Adamant javelin Adamant javelin 20 Uncommon 1,040
Runite bar Runite bar 1 Uncommon 12,563
Nature rune Nature rune 67 Uncommon 13,936
Law rune Law rune 45 Uncommon 7,785
Death rune Death rune 45 Uncommon 10,395
Rune battleaxe Rune battleaxe 1 Uncommon 24,613
Rune 2h sword Rune 2h sword 1 Uncommon 37,965
Rune sq shield Rune sq shield 1 Uncommon 22,651
Silver ore Silver ore 100 (noted) Uncommon 7,700
Dragonstone Dragonstone 1 Uncommon 12,988
Uncut diamond Uncut diamond 1 Rare 3,141
Dragon med helm Dragon med helm 1 Rare 59,303
Rune kiteshield Rune kiteshield 1 Rare 32,174
Rune spear Rune spear 1 Rare 12,074
Shield left half Shield left half 1 Rare 65,669
Dragon spear Dragon spear 1 Rare 44,533