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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 blade1Rare107,785
Fishing potion (4)Fishing potion (4)(noted)Common1,678
Super attack (1)Super attack (1)1Common1,154
Super strength (1)Super strength (1)1Common2,281
Super defence (1)Super defence (1)1Uncommon1,608
Super ranging potion (2)Super ranging potion (2)1Rare5,999
Grimy guamGrimy guam1Common355
Grimy marrentillGrimy marrentill1Common4,011
Grimy tarrominGrimy tarromin1Common49
Grimy harralanderGrimy harralander1Common143
Grimy ranarrGrimy ranarr1Common1,304
Grimy iritGrimy irit1Common2,987
Grimy kwuarmGrimy kwuarm1Uncommon5,945
Grimy avantoeGrimy avantoe1Uncommon711
Grimy cadantineGrimy cadantine1Uncommon1,730
Grimy lantadymeGrimy lantadyme1Uncommon4,555
Grimy dwarf weedGrimy dwarf weed1Uncommon3,836
Potato seed 5Potato seed1–3Common65–195
Onion seed 5Onion seed1–3Common25–75
Cabbage seed 5Cabbage seed1–3Common66–198
Tomato seed 5Tomato seed1–3Common46–138
Strawberry seed 5Strawberry seed1–3Common209–627
Watermelon seed 5Watermelon seed1–3Uncommon1,283–3,849
Evil turnip seed 5Evil turnip seed1–4Uncommon33–132
Sweetcorn seed 5Sweetcorn seed1–3Uncommon67–201
Morchella mushroom spore 5Morchella mushroom spore2Uncommon56
Fellstalk seed 5Fellstalk seed1Rare214
Coins 1000Coins342–1,671Common342–1,671
LobsterLobster1Common95
Raw lobsterRaw lobster(noted)Common630
Gold oreGold ore(noted)Common752
Fire talismanFire talisman1Rare375
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 sapphire1Common397
Uncut emeraldUncut emerald1Common726
Uncut rubyUncut ruby1Common1,223
Uncut diamondUncut diamond1Common2,545
Uncut diamondUncut diamond45–55 (noted)Rare114,525–139,975
Loop half of a keyLoop half of a key1Common10,388
Tooth half of a keyTooth half of a key1Common13,827
Uncut dragonstoneUncut dragonstone1Uncommon12,108
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare544,860–665,940
Dragon longswordDragon longsword1Common58,171
Dragon spearDragon spear1Rare36,444
BattlestaffBattlestaff180–220 (noted)Rare725,040–886,160
Rune javelinRune javelin5Rare910
Rune platebodyRune platebody1Uncommon37,480
Rune platebodyRune platebody15–25 (noted)Rare562,200–937,000
Shield left halfShield left half1Rare64,829
Dragon helmDragon helm1Uncommon58,958
Rune arrowheads 5Rune arrowheads113–137Common15,368–18,632
Onyx bolts 5Onyx bolts135–165Very rare1,053,810–1,287,990
Chaos talismanChaos talisman1Rare1,338
Nature talismanNature talisman1Rare999
Water talismanWater talisman65–82 (noted)Rare259,610–327,508
Earth talismanEarth talisman65–82 (noted)Rare15,600–19,680
Fire talismanFire talisman25–35 (noted)Rare9,375–13,125
Raw lobsterRaw lobster135–165 (noted)Common28,350–34,650
Raw sharkRaw shark225–275 (noted)Uncommon173,025–211,475
Big bonesBig bones68–82 (noted)Uncommon10,676–12,874
Dragon bonesDragon bones180–220 (noted)Rare321,660–393,140
CoalCoal200–1,100 (noted)Uncommon23,200–127,600
Gold oreGold ore90–110 (noted)Common33,840–41,360
Adamantite oreAdamantite ore180–220 (noted)Uncommon43,380–53,020
Adamant barAdamant bar14–16 (noted)Common22,918–26,192
Adamant barAdamant bar135–165 (noted)Rare220,995–270,105
Runite oreRunite ore90–110 (noted)Rare93,870–114,730
Rune barRune bar(noted)Common7,107
Rune barRune bar45–55 (noted)Rare106,605–130,295
Grimy torstolGrimy torstol90–110 (noted)Uncommon355,590–434,610
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon111,780–136,620
Super restore (4)Super restore (4)45–55 (noted)Uncommon178,155–217,745
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon127,215–155,485
Lantadyme seed 5Lantadyme seed14–16Uncommon4,900–5,600
Dwarf weed seed 5Dwarf weed seed14–16Uncommon4,312–4,928
Magic seed 5Magic seed4Uncommon104,348
Palm tree seed 5Palm tree seed10Rare277,870
FlaxFlax450–550 (noted)Common40,500–49,500
Molten glassMolten glass45–55 (noted)Common11,835–14,465
Soft claySoft clay450–550 (noted)Uncommon294,300–359,700
Yew logsYew logs68–82 (noted)Uncommon11,288–13,612
Yew logsYew logs675–825 (noted)Rare112,050–136,950
Teak plankTeak plank45–55 (noted)Uncommon14,670–17,930
Mahogany plankMahogany plank270–330 (noted)Rare223,020–272,580
Blurberry SpecialBlurberry Special1Uncommon9,095
Vecna skullVecna skull1Very rare*131,137
Hazelmere's signet ringHazelmere's signet ring1Very rare*1,671,277,144
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 rare9,624

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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