Not to be confused with Granite crab or Giant Rock Crab.
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Rock Crabs are aggressive monsters that look like harmless rocks while they are disguised, but when unsuspecting passers walk by, they attack; however, once their target leaves the nearby area, they are no longer aggressive. It should be noted that, unlike most 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. Players can tell if a rock is a crab or not by looking at the rock's shape, Rock crabs are tall oval shaped, but normal rocks in their area are mostly in large clusters of shattered pieces. It should also be noted that, as with most aggressive monsters, rock crabs will stop attacking a player if they have not left the surrounding area in a considerable amount of time (roughly between ten and twenty-five minutes). To fix this, simply run out of the surrounding area (to be sure, run halfway to the entrance to the village of Rellekka or simply enter and exit the entrance to Keldagrim) and run back, at which point the rock crabs will once more be aggressive. As they are "dormant" until "awoken" by a passing player, rock crabs cannot be attacked until they are made aggressive once more.

In the quest Fur 'n' Seek, its carcass must be collected and cleaned for the Odd Old Man.

For low defence levelled players, it is recommended that if you are killing these creatures for long periods of time, you bring some food just in case as there are no nearby banks. It is also recommended that you bring a Camelot teleport/teletab to bank for more food as it is near the area of the rock crabs, or home teleport to Seers' Village. You could also use the bank in Keldagrim. The entrance is right between the statues to the east of the Rock Crabs.


Rock Crabs used to be commonly trained upon due to their high exp rewards; and occasional valuable drops, low combat level and defence. Most places where Rock Crabs reside used to be heavily crowded. After the Evolution of Combat update, Rock Crabs became level 102, making low-level training very difficult. After the Legacy Combat update, their combat level was altered to 71.


  • North of Rellekka, west of the entrance to Keldagrim east and west of the town on the beach (may be overcrowded)
  • Waterbirth Island
  • Level 50 Wilderness.



No charmGold charmGreen charmCrimson charmBlue charm
Represents a 90% confidence range based on a sample of 37,405 kills.
1 charm is dropped at a time.
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Herbs and seeds

Item Quantity Rarity GE price
Grimy ranarrGrimy ranarr1Rare1,860
Grimy avantoeGrimy avantoe1Rare1,043
Tarromin seed 5Tarromin seed1Rare137
Ranarr seed 5Ranarr seed1Rare976
Irit seed 5Irit seed1Very rare1,018


Item Quantity Rarity GE price
Bronze pickaxeBronze pickaxe1Common1,456
Iron pickaxeIron pickaxe1Common4,343
Bronze hatchetBronze hatchet1Uncommon1,459
Iron javelinIron javelinUnknownUncommon26

Runes and Talisman

Item Quantity Rarity GE price
Fire runeFire rune7Common1,113
Nature runeNature rune4Uncommon1,620
Chaos runeChaos rune1Rare152
Cosmic talismanCosmic talisman1Rare1,030


Item Quantity Rarity GE price
Coins 250Coins4–498Common4–498
SeaweedSeaweed1–5 (noted)Common28–140
Edible seaweedEdible seaweed2Rare1,772
Oyster pearlOyster pearl1Common224
Empty oysterEmpty oyster1CommonNot sold
Rock crab carcassRock crab carcass1Common[1]Not sold
Spinach rollSpinach roll1UncommonNot sold
Iron oreIron ore1Uncommon449
Copper oreCopper ore3Uncommon1,011
Tin oreTin ore3Uncommon348
Fishing baitFishing bait1–10Uncommon5–50
Opal bolt tips 5Opal bolt tips5Uncommon40
Jade bolt tips 5Jade bolt tips1Rare10
Limpwurt rootLimpwurt root1Rare5,190
Sealed clue scroll (easy)Sealed clue scroll (easy)1RareNot sold
Spirit sapphireSpirit sapphire1RareNot sold
Spirit emeraldSpirit emerald1RareNot sold
Spirit rubySpirit ruby1RareNot sold
Starved ancient effigyStarved ancient effigy1Very rareNot sold
  1. ^ Only during Fur 'n' Seek.

Universal drops

Universal drops are dropped by nearly every monster outside of Daemonheim.
These drops are dropped alongside main drops.
Item Quantity Rarity GE price
Key tokenKey token1RareNot sold
Mimic kill tokenMimic kill token1Very rare5,575


These animals are most likely, as the name suggests, a form of crab, noting that the rock crabs always walk sideways (and attack by smashing their sides into the player). It is possible that they may belong to a different animal phylum, such as insects, and only look like crabs, although this is not very likely. The animals are always spotted near water; while the graphics of RuneScape do not show them immersing themselves in water, it can be safely assumed that they would hypothetically do so. In the quest Fur n' Seek, the rock crab's carcass that is collected by the player consists of only a shell and other, not easily visible remnants.


  • The examine for rock crabs is: "No-one likes crabs..." This could be a reference to grumpy people, as they are sometimes called "crabs".
  • The Fremennik used to eat them, as mentioned in the lore Twice Burnt, although players cannot cook them.
  • If a rock crab is killed in a small ditch a glitch will happen where the drop will be floating.

See also

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