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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 blade1Rare64,180
Fishing potion (4)Fishing potion (4)(noted)Common1,840
Super attack (1)Super attack (1)1Common1,345
Super strength (1)Super strength (1)1Common4,375
Super defence (1)Super defence (1)1Uncommon2,910
Super ranging potion (2)Super ranging potion (2)1Rare7,693
Grimy guamGrimy guam1Common376
Grimy marrentillGrimy marrentill1Common3,052
Grimy tarrominGrimy tarromin1Common101
Grimy harralanderGrimy harralander1Common174
Grimy ranarrGrimy ranarr1Common2,210
Grimy iritGrimy irit1Common4,455
Grimy kwuarmGrimy kwuarm1Uncommon13,422
Grimy avantoeGrimy avantoe1Uncommon1,345
Grimy cadantineGrimy cadantine1Uncommon3,074
Grimy lantadymeGrimy lantadyme1Uncommon10,129
Grimy dwarf weedGrimy dwarf weed1Uncommon10,250
Potato seed 5Potato seed1–3Common99–297
Onion seed 5Onion seed1–3Common64–192
Cabbage seed 5Cabbage seed1–3Common105–315
Tomato seed 5Tomato seed1–3Common103–309
Strawberry seed 5Strawberry seed1–3Common386–1,158
Watermelon seed 5Watermelon seed1–3Uncommon2,832–8,496
Evil turnip seed 5Evil turnip seed1–4Uncommon40–160
Sweetcorn seed 5Sweetcorn seed1–3Uncommon144–432
Morchella mushroom spore 5Morchella mushroom spore2Uncommon182
Fellstalk seed 5Fellstalk seed1Rare562
Coins 1000Coins342–1,671Common342–1,671
LobsterLobster1Common102
Raw lobsterRaw lobster(noted)Common1,410
Gold oreGold ore(noted)Common722
Fire talismanFire talisman1Rare306
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 sapphire1Common408
Uncut emeraldUncut emerald1Common825
Uncut rubyUncut ruby1Common1,236
Uncut diamondUncut diamond1Common2,810
Uncut diamondUncut diamond45–55 (noted)Rare126,450–154,550
Loop half of a keyLoop half of a key1Common12,066
Tooth half of a keyTooth half of a key1Common15,671
Uncut dragonstoneUncut dragonstone1Uncommon12,553
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare564,885–690,415
Dragon longswordDragon longsword1Common58,061
Dragon spearDragon spear1Rare34,731
BattlestaffBattlestaff180–220 (noted)Rare657,360–803,440
Rune javelinRune javelin5Rare910
Rune platebodyRune platebody1Uncommon37,480
Rune platebodyRune platebody15–25 (noted)Rare562,200–937,000
Shield left halfShield left half1Rare65,210
Dragon helmDragon helm1Uncommon59,077
Rune arrowheads 5Rune arrowheads113–137Common14,690–17,810
Onyx bolts 5Onyx bolts135–165Very rare1,064,340–1,300,860
Chaos talismanChaos talisman1Rare1,405
Nature talismanNature talisman1Rare1,190
Water talismanWater talisman65–82 (noted)Rare250,055–315,454
Earth talismanEarth talisman65–82 (noted)Rare11,635–14,678
Fire talismanFire talisman25–35 (noted)Rare7,650–10,710
Raw lobsterRaw lobster135–165 (noted)Common63,450–77,550
Raw sharkRaw shark225–275 (noted)Uncommon199,125–243,375
Big bonesBig bones68–82 (noted)Uncommon10,880–13,120
Dragon bonesDragon bones180–220 (noted)Rare336,240–410,960
CoalCoal200–1,100 (noted)Uncommon23,400–128,700
Gold oreGold ore90–110 (noted)Common32,490–39,710
Adamantite oreAdamantite ore180–220 (noted)Uncommon44,640–54,560
Adamant barAdamant bar14–16 (noted)Common19,530–22,320
Adamant barAdamant bar135–165 (noted)Rare188,325–230,175
Runite oreRunite ore90–110 (noted)Rare92,070–112,530
Rune barRune bar(noted)Common6,450
Rune barRune bar45–55 (noted)Rare96,750–118,250
Grimy torstolGrimy torstol90–110 (noted)Uncommon646,290–789,910
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon174,420–213,180
Super restore (4)Super restore (4)45–55 (noted)Uncommon177,795–217,305
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon178,920–218,680
Lantadyme seed 5Lantadyme seed14–16Uncommon14,826–16,944
Dwarf weed seed 5Dwarf weed seed14–16Uncommon12,222–13,968
Magic seed 5Magic seed4Uncommon209,668
Palm tree seed 5Palm tree seed10Rare530,300
FlaxFlax450–550 (noted)Common40,500–49,500
Molten glassMolten glass45–55 (noted)Common11,790–14,410
Soft claySoft clay450–550 (noted)Uncommon260,550–318,450
Yew logsYew logs68–82 (noted)Uncommon12,104–14,596
Yew logsYew logs675–825 (noted)Rare120,150–146,850
Teak plankTeak plank45–55 (noted)Uncommon15,840–19,360
Mahogany plankMahogany plank270–330 (noted)Rare238,950–292,050
Blurberry SpecialBlurberry Special1Uncommon16,746
Vecna skullVecna skull1Very rare*71,223
Hazelmere's signet ringHazelmere's signet ring1Very rare*1,590,640,621
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 rare9,054

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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