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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)Common1,912
Super attack (1)Super attack (1)1Common1,627
Super strength (1)Super strength (1)1Common4,903
Super defence (1)Super defence (1)1Uncommon2,876
Super ranging potion (2)Super ranging potion (2)1Rare12,624
Grimy guamGrimy guam1Common580
Grimy marrentillGrimy marrentill1Common4,214
Grimy tarrominGrimy tarromin1Common95
Grimy harralanderGrimy harralander1Common256
Grimy ranarrGrimy ranarr1Common2,072
Grimy iritGrimy irit1Common4,721
Grimy kwuarmGrimy kwuarm1Uncommon12,790
Grimy avantoeGrimy avantoe1Uncommon1,124
Grimy cadantineGrimy cadantine1Uncommon2,920
Grimy lantadymeGrimy lantadyme1Uncommon9,665
Grimy dwarf weedGrimy dwarf weed1Uncommon9,159
Potato seed 5Potato seed1–3Common169–507
Onion seed 5Onion seed1–3Common92–276
Cabbage seed 5Cabbage seed1–3Common245–735
Tomato seed 5Tomato seed1–3Common154–462
Strawberry seed 5Strawberry seed1–3Common1,207–3,621
Watermelon seed 5Watermelon seed1–3Uncommon3,942–11,826
Evil turnip seed 5Evil turnip seed1–4Uncommon109–436
Sweetcorn seed 5Sweetcorn seed1–3Uncommon237–711
Morchella mushroom spore 5Morchella mushroom spore2Uncommon610
Fellstalk seed 5Fellstalk seed1Rare1,067
Coins 1000Coins342–1,671Common342–1,671
LobsterLobster1Common140
Raw lobsterRaw lobster(noted)Common1,710
Gold oreGold ore(noted)Common746
Fire talismanFire talisman1Rare330
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 sapphire1Common466
Uncut emeraldUncut emerald1Common734
Uncut rubyUncut ruby1Common1,286
Uncut diamondUncut diamond1Common2,611
Uncut diamondUncut diamond45–55 (noted)Rare117,495–143,605
Loop half of a keyLoop half of a key1Common11,467
Tooth half of a keyTooth half of a key1Common15,189
Uncut dragonstoneUncut dragonstone1Uncommon12,166
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare547,470–669,130
Dragon longswordDragon longsword1Common58,092
Dragon spearDragon spear1Rare36,753
BattlestaffBattlestaff180–220 (noted)Rare578,520–707,080
Rune javelinRune javelin5Rare905
Rune platebodyRune platebody1Uncommon37,480
Rune platebodyRune platebody15–25 (noted)Rare562,200–937,000
Shield left halfShield left half1Rare63,849
Dragon helmDragon helm1Uncommon58,768
Rune arrowheads 5Rune arrowheads113–137Common13,899–16,851
Onyx bolts 5Onyx bolts135–165Very rare1,048,005–1,280,895
Chaos talismanChaos talisman1Rare1,506
Nature talismanNature talisman1Rare1,249
Water talismanWater talisman65–82 (noted)Rare191,750–241,900
Earth talismanEarth talisman65–82 (noted)Rare12,480–15,744
Fire talismanFire talisman25–35 (noted)Rare8,250–11,550
Raw lobsterRaw lobster135–165 (noted)Common76,950–94,050
Raw sharkRaw shark225–275 (noted)Uncommon245,025–299,475
Big bonesBig bones68–82 (noted)Uncommon12,920–15,580
Dragon bonesDragon bones180–220 (noted)Rare417,780–510,620
CoalCoal200–1,100 (noted)Uncommon23,600–129,800
Gold oreGold ore90–110 (noted)Common33,570–41,030
Adamantite oreAdamantite ore180–220 (noted)Uncommon43,560–53,240
Adamant barAdamant bar14–16 (noted)Common19,740–22,560
Adamant barAdamant bar135–165 (noted)Rare190,350–232,650
Runite oreRunite ore90–110 (noted)Rare80,460–98,340
Rune barRune bar(noted)Common6,438
Rune barRune bar45–55 (noted)Rare96,570–118,030
Grimy torstolGrimy torstol90–110 (noted)Uncommon654,210–799,590
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon164,430–200,970
Super restore (4)Super restore (4)45–55 (noted)Uncommon151,290–184,910
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon155,520–190,080
Lantadyme seed 5Lantadyme seed14–16Uncommon33,838–38,672
Dwarf weed seed 5Dwarf weed seed14–16Uncommon20,454–23,376
Magic seed 5Magic seed4Uncommon354,708
Palm tree seed 5Palm tree seed10Rare803,770
FlaxFlax450–550 (noted)Common44,100–53,900
Molten glassMolten glass45–55 (noted)Common14,535–17,765
Soft claySoft clay450–550 (noted)Uncommon230,400–281,600
Yew logsYew logs68–82 (noted)Uncommon12,648–15,252
Yew logsYew logs675–825 (noted)Rare125,550–153,450
Teak plankTeak plank45–55 (noted)Uncommon13,950–17,050
Mahogany plankMahogany plank270–330 (noted)Rare226,800–277,200
Blurberry SpecialBlurberry Special1Uncommon14,964
Vecna skullVecna skull1Very rare*92,094
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 rare6,984

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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