| Rock crab | ||||||||||||||||||||||||||||||||||||||||||||||||
| Release date | Unknown edit | |||||||||||||||||||||||||||||||||||||||||||||||
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| Members | Yes | |||||||||||||||||||||||||||||||||||||||||||||||
| Combat level | 13 | |||||||||||||||||||||||||||||||||||||||||||||||
| XP per kill | Unknown edit | |||||||||||||||||||||||||||||||||||||||||||||||
| Examine text | No one likes crabs... | |||||||||||||||||||||||||||||||||||||||||||||||
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| Slayer level | Unknown edit | |||||||||||||||||||||||||||||||||||||||||||||||
| Slayer XP | N/A | |||||||||||||||||||||||||||||||||||||||||||||||
| Assigned by | Unknown edit | |||||||||||||||||||||||||||||||||||||||||||||||
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- Not to be confused with Granite crabs.
A rock crab wakes up and attacks an approaching player
Rock crabs are aggressive monsters that look like harmless rocks while they are sleeping, and wake up and attack unsuspecting players that pass by. These monsters are quite popular training monsters, because of their low combat level and high hitpoints. Rock crabs are also a good source of gold charms for lower level players. Most rock crabs are located in Multi-combat areas, making them good targets for cannons. However, many players consider cannons to be a form of kill stealing. It should be noted that, unlike other enemies and NPCs, rock crabs are not marked with yellow dots on the minimap. This is probably due to the fact that the crabs' appearance camouflages them as rocks. Rock crabs start off looking just like a bunch of rocks until you walk near them, which makes them 'wake up' and they start attacking you. If after a while they stop attacking you even when you walk near them, just run down to the Rellekka entrance then back to the rock crabs and they should start attacking again.
In the quest Fur 'n' Seek, its carcass must be collected and cleaned for the Odd Old Man
Locations
- North of Rellekka, east and west of the town on the beach
- Waterbirth Island - No Multi-Combat
- Brine Rat Cavern
Drops
Gems
Charms (Pay-to-play)
Charm drop percentages No charms 
73–86%
13–26%
0–2.6%
0–2.6%
0.2–4.4%
- Represents 90% confidence range, based on a sample of 100 kills.
1 charm is dropped at a time.
Others
- Nothing (uncommon)
- Grimy rannar
- Casket (rare)
- Coins (4 - 50)
- 1 Iron ore
- 2 Coal
- 3 Copper
- 3 Tin
- Fishing bait
- 1,2 Oysters (very common)
- 1-5 Seaweed (noted)(very common)
- 2 Edible seaweed
- Spinach roll (uncommon)
- Bronze pickaxe (common)
- Iron pickaxe (common)
- Knife (uncommon)
- 5 Rune Javelin (extremely rare)
- 5 Opal bolt tips (rare)
- Jade bolt tips (extremely rare)
- Bronze hatchet (rare)
- Nature talisman (very rare)
- Cosmic talisman (rare)
- Clue scroll (Level 1) (extremely rare)
- Loop half of a key (extremely rare)
- tooth half of a key (extremely rare)
- Shield left half (extremely rare)
- Nature rune (4)
- Chaos Rune (very rare)
- Empty oyster (common)
Trivia
- When rock crabs are camouflaged, if you look at them closely, you can see some of their legs showing.
- There was once a rumour that rock crabs give 4x the amount of experience, but this is false.
- When picking up a drop from a larger rock crab kill, it makes the motion of picking a crop or smelting a bar.