|Release date||1 August 2005 (Update)|
|XP per kill||399 (and 131.6 experience)|
|Examine text|| •No one likes crabs... especially really big ones!|
•"Heavy rock!" (when disguised as a boulder)
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 target them gives the message "Invalid target."
Giant Rock Crabs are good droppers of charms, as they drop 3 of them at a time. They also drop various black equipment (platebody and claws), worth a decent sum of coins. They are the only droppers of rock-shell parts, which are needed to create Rock-shell armour.
- In the Waterbirth Island Dungeon.
- In the Chaos Tunnels (the middle south rift just east of Mage of Zamorak leads directly to them).
A notably effective and economic way to kill Giant Rock Crabs is the Black Salamander, or the Polypore Staff. The Black Salamander's magic attack, and the Polypore staff's attack acts as a normal magic attack and takes advantage of their lower magic defence. Their magic defence is so low you can utilise high level defensive armour without losing much accuracy.
In the Chaos Tunnels, they will eventually lose aggression. When they do, just leave the cave via the rope exit. Then just go straight back down the crevice.
They are most vulnerable to fire-based spells.
Mage Gear is as follows:
- Helmet: Farseer helmet > Infinity > Ahrim's > Dagon'hai > Mystic/Sacred clay
- Necklace: Stream necklace > Amulet of fury > Amulet of glory > Amulet of magic/Amulet of power
- Cape: God cape > Soul war cape > Ardougne cloak (4/3>2) > Obsidian cape, Cape of Accomplishment,
- Body: Ahrim's > Infinity > Dagon'hai > Mystic/Sacred clay
- Legs: Ahrim's > Infinity > Dagon'hai > Mystic/Sacred clay
- Weapon Slot: Polypore Staff, Elemental staff or a 'Magic damage'-increasing staff
- Shield: God book (Unholy>Ancient>Balance) or Broodoo Shield > Mage's book > Arcane spirit shield
- Gloves: Barrows gloves > Rune gloves > Lunar gloves > Regen bracelet
- Boots: Infinity > Wizard's > Mystic > Lunar > Swanky
- Ring: Seers' ring (i) > Tokkul-Zo > Beacon ring > Ring of Wealth
If you are using ice burst or barrage the arcane stream necklace is not as important here because magic damage boost adds only to the target you click on. The other 8 targets do not receive the damage boost from it or your staff, so you would be better off using a necklace with a prayer bonus.
If using burst or barrage spells the Staff of light is recommended despite the lower mage bonus (in comparison to Master wand, or Chaotic staff) given the fact that it gives free casts; when used in conjunction with Battle Robes, it has a 50% chance of saving runes when casting. Even when this effect doesn't activate, the Battle Robes themselves have a chance to save runes, effectively adding up to a 60% chance of saving runes. The Battle robes will, however, only last for 6 hours of combat after which they will need to be recharged (270 tokens).
Provided you are going to be bursting, a Tome of frost is recommended above items that provide a higher magic bonus. This is because rock lobsters have fairly low magic defence (thus the difference in offensive magic bonus is negligible), while the tome saves an inventory space and the need for Water runes.
The Giant Rock Crab is one of few monsters in RuneScape that will retreat from battle when they become critically wounded. One way to avoid this (in the southern room in the chaos tunnels) is to kill the eastern one first (using the safespot in the picture above). Then when picking up the drop from them you will have likely alerted a few other giant rock crabs. Go back to the safespot and two should follow you there, from there kill them. While you're killing them the one you first killed should spawn but not attack (unless you go beside it). Because he spawns the other two can't get out and are trapped, so they cannot retreat. After killing the first one, don't pick up the drop and proceed to kill the second one. This means that you will not alert the one that spawned and you will have another retreat free kill. This may be repeated indefinitely in this fashion.
Item Quantity Rarity GE Market Price Bones 1 Always 384
Item Quantity Rarity GE Market Price Water rune 1–39 Common 25–975 Earth rune 2–37 Common 26–481 Air talisman 1 Uncommon 115 Mind talisman 1 Uncommon 207 Fire talisman 1 Uncommon 3,755 Cosmic talisman 1 Rare 2,042 Body talisman 1 Rare 199 Water talisman 1 Uncommon 12,984 Earth talisman 1 Uncommon 3,489 Nature talisman 1 Rare 303 Chaos talisman 1 Uncommon 984
Item Quantity Rarity GE Market Price Steel platebody 1 Common 1,049 Black claw 1 Uncommon 389 Off-hand black claw 1 Uncommon 1,581 Black platebody 1 Common 1,978 Mithril hatchet 1 Common 114 Rock-shell gloves 1 Uncommon 15,389 Rock-shell boots 1 Uncommon 5,966 Black warhammer 1 Uncommon 453 Off-hand black warhammer 1 Uncommon 347 Adamant longsword 1 Uncommon 1,486 Adamant warhammer 1 Rare 2,567
- Represents 90% confidence range, based on a sample of 2,507 kills.
3 charms are dropped at a time.
- Please add to the log (only if 50 or more creatures killed).
Item Quantity Rarity GE Market Price Poison ivy seed 1 Uncommon 4 Belladonna seed 1 Uncommon 89 Guam seed 1 Uncommon 2 Marrentill seed 1 Uncommon 5 Tarromin seed 1 Uncommon 4 Harralander seed 1 Uncommon 10 Toadflax seed 1 Rare 2,278 Ranarr seed 1 Rare 1,764 Irit seed 1 Rare 335 Avantoe seed 1 Rare 2,771 Snapdragon seed 1 Rare 2,045 Cadantine seed 1 Rare 839 Lantadyme seed 1 Rare 34,066 Dwarf weed seed 1 Very rare 49,171 Torstol seed 1 Very rare 24,352
Item Quantity Rarity GE Market Price Grimy guam 1 Uncommon 937 Grimy marrentill 1 Uncommon 81 Grimy tarromin 1 Uncommon 34 Grimy harralander 1 Uncommon 208 Grimy ranarr 1 Rare 3,179 Grimy irit 1 Rare 3,087 Grimy avantoe 1 Rare 4,798 Grimy kwuarm 1 Rare 4,778 Grimy cadantine 1 Rare 2,179 Grimy lantadyme 1 Rare 9,093 Grimy dwarf weed 1 Rare 10,809
Item Quantity Rarity GE Market Price Coins 27, 28, 42, 70, 137 Common Not sold Raw lobster 1 Common 307 Raw bass 1 Common 405 Tinderbox 1 Common 328 Casket 1 Rare 7,597 Rock-shell splinter 1 Uncommon 13,197 Rock-shell chunk 1 Rare 6,107 Rock-shell shard 1 Rare 11,032 Clue scroll (medium) 1 Very rare Not sold Starved ancient effigy 1 Very rare Not sold
Rare drop table dropsEdit
- This monster has access to the rare drop table.
The ring of wealth is not required to access the table.
Show/hide rare drop table Item Quantity Rarity GE Market Price Coins 250 – 450; 3,000;
9,000; 10,000; 12,000
Common Not sold Uncut sapphire 1 Common 1,434 Uncut emerald 1 Common 2,772 Uncut ruby 1 Common 3,643 Uncut diamond 1 Uncommon 6,590 Loop half of a key 1 Uncommon 19,005 Tooth half of a key 1 Uncommon 40,326 Uncut dragonstone 1 Rare 15,867 Dragonstone 1 Rare 10,237 Dragon dagger 1 Uncommon 16,300 Rune battleaxe 1 Rare 24,098 Rune javelin 5 Rare 900 Adamant javelin 20 Very rare 1,200 Rune 2h sword 1 Very rare 37,522 Rune spear 1 Very rare 11,433 Dragon spear 1 Very rare 36,336 Dragon dagger 50 (noted) Very rare 815,000 Rune sq shield 1 Very rare 22,348 Rune kiteshield 1 Very rare 31,840 Shield left half 1 Very rare 63,812 Dragon helm 1 Very rare 59,386 Adamant bolts 200 Uncommon 20,600 Onyx bolts 150 Rare 1,264,050 Rune arrow 150–200, 500 Rare 21,600–72,000 Battlestaff 200 (noted) Rare 1,635,800 Vecna skull 1 Very rare 90,593 Water talisman 1 Uncommon 12,984 Earth talisman 25–35 (noted) Uncommon 87,225–122,115 Fire talisman 25–35 (noted) Uncommon 93,875–131,425 Chaos talisman 1 Uncommon 984 Nature talisman 1 Uncommon 303 Pure essence 500–15,000 (noted) Uncommon 7,500–225,000 Nature rune 20–80 Rare 5,640–22,560 Soul rune 20 Rare 3,020 Law rune 45 Rare 11,880 Death rune 50, 121 Rare 6,950–16,819 Blood rune 50 Rare 12,500 Raw swordfish 125–250, 1,000 (noted) Uncommon 52,750–422,000 Raw shark 250–500 (noted) Uncommon 441,000–882,000 Big bones 150–500 (noted) Uncommon 98,550–328,500 Coal 150–7,500 (noted) Uncommon 34,200–1,710,000 Adamantite ore 150–800 (noted) Uncommon 302,850–1,615,200 Silver ore 100 (noted) Rare 10,600 Runite ore 100 (noted) Rare 1,130,700 Adamant bar 1,000–7,000 (noted) Rare 3,215,000–22,505,000 Rune bar 1, 50 (noted) Rare 14,190–709,500 Clean toadflax 25–250 (noted) Uncommon 129,700–1,297,000 Clean snapdragon 30–120 (noted) Uncommon 127,020–508,080 Clean torstol 10–100 (noted) Uncommon 73,460–734,600 Watermelon seed 3 Uncommon 6,624 Yew seed 1–50 Rare 66,914–3,345,700 Magic seed 1–7 Rare 133,460–934,220 Palm tree seed 10 Rare 1,045,090 Snapdragon seed 1 Rare 2,045 Yew logs 50–20,000 (noted) Rare 20,000–8,000,000 Crystal triskelion fragment 1 1 Very rare Not sold Crystal triskelion fragment 2 1 Very rare Not sold Crystal triskelion fragment 3 1 Very rare Not sold Brawling gloves (Melee) 1 Very rare Not sold Brawling gloves (Magic) 1 Very rare Not sold Brawling gloves (Ranged) 1 Very rare Not sold Brawling gloves (Agility) 1 Very rare Not sold Brawling gloves (Cooking) 1 Very rare Not sold Brawling gloves (FM) 1 Very rare Not sold Brawling gloves (Fishing) 1 Very rare Not sold Brawling gloves (Hunter) 1 Very rare Not sold Brawling gloves (Mining) 1 Very rare Not sold Brawling gloves (Prayer) 1 Very rare Not sold Brawling gloves (Smithing) 1 Very rare Not sold Brawling gloves (Thieving) 1 Very rare Not sold Brawling gloves (WC) 1 Very rare Not sold
- Universal drops are dropped by nearly every monster outside of Daemonheim.
- These drops are dropped alongside main drops.
Item Quantity Rarity GE Market Price Key token 1 Rare Not sold