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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 claw1Uncommon4,555
Off-hand rune clawOff-hand rune claw1Uncommon3,835
Brackish bladeBrackish blade1Rare64,847
Fishing potion (4)Fishing potion (4)(noted)Common1,848
Super attack (1)Super attack (1)1Common1,994
Super strength (1)Super strength (1)1Common5,637
Super defence (1)Super defence (1)1Uncommon3,757
Super ranging potion (2)Super ranging potion (2)1Rare14,666
Grimy guamGrimy guam1Common583
Grimy marrentillGrimy marrentill1Common3,140
Grimy tarrominGrimy tarromin1Common98
Grimy harralanderGrimy harralander1Common543
Grimy ranarrGrimy ranarr1Common2,092
Grimy iritGrimy irit1Common5,976
Grimy kwuarmGrimy kwuarm1Uncommon12,997
Grimy avantoeGrimy avantoe1Uncommon1,296
Grimy cadantineGrimy cadantine1Uncommon4,328
Grimy lantadymeGrimy lantadyme1Uncommon11,437
Grimy dwarf weedGrimy dwarf weed1Uncommon10,967
Potato seed 5Potato seed1–3Common224–672
Onion seed 5Onion seed1–3Common178–534
Cabbage seed 5Cabbage seed1–3Common257–771
Tomato seed 5Tomato seed1–3Common150–450
Strawberry seed 5Strawberry seed1–3Common1,277–3,831
Watermelon seed 5Watermelon seed1–3Uncommon3,086–9,258
Evil turnip seed 5Evil turnip seed1–4Uncommon167–668
Sweetcorn seed 5Sweetcorn seed1–3Uncommon276–828
Morchella mushroom spore 5Morchella mushroom spore2Uncommon566
Fellstalk seed 5Fellstalk seed1Rare1,074
Coins 1000Coins342–1,671Common342–1,671
LobsterLobster1Common211
Raw lobsterRaw lobster(noted)Common1,455
Gold oreGold ore(noted)Common742
Fire talismanFire talisman1Rare354
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 sapphire1Common592
Uncut emeraldUncut emerald1Common1,040
Uncut rubyUncut ruby1Common1,449
Uncut diamondUncut diamond1Common3,052
Uncut diamondUncut diamond45–55 (noted)Rare137,340–167,860
Loop half of a keyLoop half of a key1Common11,973
Tooth half of a keyTooth half of a key1Common14,802
Uncut dragonstoneUncut dragonstone1Uncommon12,541
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare564,345–689,755
Dragon longswordDragon longsword1Common57,635
Dragon spearDragon spear1Rare36,452
BattlestaffBattlestaff180–220 (noted)Rare565,740–691,460
Rune javelinRune javelin5Rare895
Rune platebodyRune platebody1Uncommon37,480
Rune platebodyRune platebody15–25 (noted)Rare562,200–937,000
Shield left halfShield left half1Rare64,976
Dragon helmDragon helm1Uncommon58,583
Rune arrowheads 5Rune arrowheads113–137Common14,238–17,262
Onyx bolts 5Onyx bolts135–165Very rare1,037,475–1,268,025
Chaos talismanChaos talisman1Rare1,335
Nature talismanNature talisman1Rare1,318
Water talismanWater talisman65–82 (noted)Rare205,335–259,038
Earth talismanEarth talisman65–82 (noted)Rare12,805–16,154
Fire talismanFire talisman25–35 (noted)Rare8,850–12,390
Raw lobsterRaw lobster135–165 (noted)Common65,475–80,025
Raw sharkRaw shark225–275 (noted)Uncommon248,850–304,150
Big bonesBig bones68–82 (noted)Uncommon12,784–15,416
Dragon bonesDragon bones180–220 (noted)Rare376,020–459,580
CoalCoal200–1,100 (noted)Uncommon23,200–127,600
Gold oreGold ore90–110 (noted)Common33,390–40,810
Adamantite oreAdamantite ore180–220 (noted)Uncommon41,940–51,260
Adamant barAdamant bar14–16 (noted)Common19,110–21,840
Adamant barAdamant bar135–165 (noted)Rare184,275–225,225
Runite oreRunite ore90–110 (noted)Rare75,960–92,840
Rune barRune bar(noted)Common6,207
Rune barRune bar45–55 (noted)Rare93,105–113,795
Grimy torstolGrimy torstol90–110 (noted)Uncommon774,630–946,770
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon154,710–189,090
Super restore (4)Super restore (4)45–55 (noted)Uncommon168,435–205,865
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon214,785–262,515
Lantadyme seed 5Lantadyme seed14–16Uncommon47,194–53,936
Dwarf weed seed 5Dwarf weed seed14–16Uncommon23,254–26,576
Magic seed 5Magic seed4Uncommon313,676
Palm tree seed 5Palm tree seed10Rare835,450
FlaxFlax450–550 (noted)Common64,350–78,650
Molten glassMolten glass45–55 (noted)Common17,595–21,505
Soft claySoft clay450–550 (noted)Uncommon233,100–284,900
Yew logsYew logs68–82 (noted)Uncommon12,784–15,416
Yew logsYew logs675–825 (noted)Rare126,900–155,100
Teak plankTeak plank45–55 (noted)Uncommon16,785–20,515
Mahogany plankMahogany plank270–330 (noted)Rare275,670–336,930
Blurberry SpecialBlurberry Special1Uncommon14,380
Vecna skullVecna skull1Very rare*108,436
Hazelmere's signet ringHazelmere's signet ring1Very rare*1,621,945,897
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 rare6,131

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.
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