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'Rum'-pumped crab icon
Killing 'rum'-pumped crabs

By having the surgeons trapped in the other room, you can easily deal with the crabs.

'Rum'-pumped crabs are mutated crustaceans found in the 'Rum'geon on Braindeath Island. They have been injected by Captain Donnie's general malpractitioners in order to create an army. They are the only monsters that drop the brackish blade.

In order to access the dungeon, the quest A Clockwork Syringe needs to be partially completed and the player must have a fishbowl helmet and diving apparatus equipped, otherwise they will not be allowed to enter.

'Rum'-pumped crabs use only melee with a maximum hit of around 240. They will constantly be considered aggressive towards anyone within the 'Rum'geon. They will take increased damage from the brackish blade that they drop, as well as the brine sabre.

Drops

Charms

No charmGold charmGreen charmCrimson charmBlue charm
89–91%2–3%1–2%2–3%4–5%
Represents a 90% confidence range based on a sample of 2,401 kills.
1 charm is dropped at a time.
Add data to the log (requires JavaScript).

Main drop

Item Quantity Rarity GE price
Rune clawRune claw1Uncommon4,117
Off-hand rune clawOff-hand rune claw1Uncommon3,303
Brackish bladeBrackish blade1Rare111,027
Fishing potion (4)Fishing potion (4)(noted)Common1,788
Super attack (1)Super attack (1)1Common1,043
Super strength (1)Super strength (1)1Common1,797
Super defence (1)Super defence (1)1Uncommon992
Super ranging potion (2)Super ranging potion (2)1Rare6,709
Grimy guamGrimy guam1Common328
Grimy marrentillGrimy marrentill1Common210
Grimy tarrominGrimy tarromin1Common24
Grimy harralanderGrimy harralander1Common90
Grimy ranarrGrimy ranarr1Common1,936
Grimy iritGrimy irit1Common3,159
Grimy kwuarmGrimy kwuarm1Uncommon4,372
Grimy avantoeGrimy avantoe1Uncommon933
Grimy cadantineGrimy cadantine1Uncommon2,476
Grimy lantadymeGrimy lantadyme1Uncommon2,622
Grimy dwarf weedGrimy dwarf weed1Uncommon2,128
Potato seed 5Potato seed1–3Common34–102
Onion seed 5Onion seed1–3Common15–45
Cabbage seed 5Cabbage seed1–3Common30–90
Tomato seed 5Tomato seed1–3Common13–39
Strawberry seed 5Strawberry seed1–3Common366–1,098
Watermelon seed 5Watermelon seed1–3Uncommon2,602–7,806
Evil turnip seed 5Evil turnip seed1–4Uncommon25–100
Sweetcorn seed 5Sweetcorn seed1–3Uncommon34–102
Morchella mushroom spore 5Morchella mushroom spore2Uncommon842
Fellstalk seed 5Fellstalk seed1Rare445
Coins 1000Coins342–1,671Common342–1,671
LobsterLobster1Common143
Raw lobsterRaw lobster(noted)Common465
Gold oreGold ore(noted)Common330
Fire talismanFire talisman1Rare1,822
Rare drop tableRare drop table1RareNot sold

Tertiary

Item Quantity Rarity GE price
Spirit sapphireSpirit sapphire1RareNot sold
Spirit emeraldSpirit emerald1RareNot sold
Spirit rubySpirit ruby1RareNot sold
Starved ancient effigyStarved ancient effigy1Very rareNot sold

Rare drop table

This monster has access to the rare drop table.
Luck-enhancing items such as a ring of wealth or luck of the dwarves are not required to access the table.
Show/hide rare drop table
Item Quantity Rarity GE price
Coins 250Coins250–500Common250–500
Uncut sapphireUncut sapphire1Common683
Uncut emeraldUncut emerald1Common1,575
Uncut rubyUncut ruby1Common1,181
Uncut diamondUncut diamond1Common2,147
Uncut diamondUncut diamond45–55 (noted)Rare96,615–118,085
Loop half of a keyLoop half of a key1Common17,695
Tooth half of a keyTooth half of a key1Common19,243
Uncut dragonstoneUncut dragonstone1Uncommon10,932
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare491,940–601,260
Dragon longswordDragon longsword1Common58,024
Dragon spearDragon spear1Rare36,204
BattlestaffBattlestaff180–220 (noted)Rare1,094,760–1,338,040
Rune javelinRune javelin5Rare910
Rune platebodyRune platebody1Uncommon37,905
Rune platebodyRune platebody15–25 (noted)Rare568,575–947,625
Shield left halfShield left half1Rare64,688
Dragon helmDragon helm1Uncommon58,863
Rune arrowheads 5Rune arrowheads113–137Common22,035–26,715
Onyx bolts 5Onyx bolts135–165Very rare1,070,010–1,307,790
Chaos talismanChaos talisman1Rare1,526
Nature talismanNature talisman1Rare1,437
Water talismanWater talisman65–82 (noted)Rare473,915–597,862
Earth talismanEarth talisman65–82 (noted)Rare151,385–190,978
Fire talismanFire talisman25–35 (noted)Rare45,550–63,770
Raw lobsterRaw lobster135–165 (noted)Common20,925–25,575
Raw sharkRaw shark225–275 (noted)Uncommon231,300–282,700
Big bonesBig bones68–82 (noted)Uncommon16,592–20,008
Dragon bonesDragon bones180–220 (noted)Rare312,300–381,700
CoalCoal200–1,100 (noted)Uncommon26,800–147,400
Gold oreGold ore90–110 (noted)Common14,850–18,150
Adamantite oreAdamantite ore180–220 (noted)Uncommon261,720–319,880
Adamant barAdamant bar14–16 (noted)Common37,604–42,976
Adamant barAdamant bar135–165 (noted)Rare362,610–443,190
Runite oreRunite ore90–110 (noted)Rare1,052,640–1,286,560
Rune barRune bar(noted)Common40,881
Rune barRune bar45–55 (noted)Rare613,215–749,485
Grimy torstolGrimy torstol90–110 (noted)Uncommon286,200–349,800
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon88,650–108,350
Super restore (4)Super restore (4)45–55 (noted)Uncommon130,230–159,170
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon140,940–172,260
Lantadyme seed 5Lantadyme seed14–16Uncommon5,306–6,064
Dwarf weed seed 5Dwarf weed seed14–16Uncommon9,254–10,576
Magic seed 5Magic seed4Uncommon394,820
Palm tree seed 5Palm tree seed10Rare859,470
FlaxFlax450–550 (noted)Common18,900–23,100
Molten glassMolten glass45–55 (noted)Common8,820–10,780
Soft claySoft clay450–550 (noted)Uncommon216,000–264,000
Yew logsYew logs68–82 (noted)Uncommon10,336–12,464
Yew logsYew logs675–825 (noted)Rare102,600–125,400
Teak plankTeak plank45–55 (noted)Uncommon33,660–41,140
Mahogany plankMahogany plank270–330 (noted)Rare287,550–351,450
Blurberry SpecialBlurberry Special1Uncommon7,734
Vecna skullVecna skull1Very rare*241,411
Hazelmere's signet ringHazelmere's signet ring1Very rare*2,052,582,424
Brawling gloves (Melee)Brawling gloves (Melee)1Very rareNot sold
Brawling gloves (Magic)Brawling gloves (Magic)1Very rareNot sold
Brawling gloves (Ranged)Brawling gloves (Ranged)1Very rareNot sold
Brawling gloves (Agility)Brawling gloves (Agility)1Very rareNot sold
Brawling gloves (Cooking)Brawling gloves (Cooking)1Very rareNot sold
Brawling gloves (FM)Brawling gloves (FM)1Very rareNot sold
Brawling gloves (Fishing)Brawling gloves (Fishing)1Very rareNot sold
Brawling gloves (Hunter)Brawling gloves (Hunter)1Very rareNot sold
Brawling gloves (Mining)Brawling gloves (Mining)1Very rareNot sold
Brawling gloves (Prayer)Brawling gloves (Prayer)1Very rareNot sold
Brawling gloves (Smithing)Brawling gloves (Smithing)1Very rareNot sold
Brawling gloves (Thieving)Brawling gloves (Thieving)1Very rareNot sold
Brawling gloves (WC)Brawling gloves (WC)1Very rareNot sold
Crystal triskelion fragment 1Crystal triskelion fragment 11Very rareNot sold
Crystal triskelion fragment 2Crystal triskelion fragment 21Very rareNot sold
Crystal triskelion fragment 3Crystal triskelion fragment 31Very rareNot sold

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 rare10,059

Trivia

  • Before the Evolution of Combat when the special attack of the brine sabre and brackish blade was used on a 'Rum'-pumped crab the message "The Brine Sabre/Brackish Blade seems super-effective." appeared. This may have been a reference to Pokémon where a player would see "It's super effective!" when a Pokémon was hit by an attack that it was weak to.
  • Killing a 'rum'-pumped crab is required to complete the Alcrabholic task in the Daemonheim task set.
  • Despite requiring a Slayer level,'Rum'-pumped crabs are not a slayer assignment.
  • Despite being a crab, they used to drop bones. This was rectified on 1 July 2014.
  • According to "Admiral" Wadud, 'rum'-pumped crabs are a delicacy for the aristocracy of Menaphos.