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RSGOALS · RS3
Black mask
Signature drop: Black mask

Sea horror

Sea horror is a level 104 members monster found in the Wilderness, with 17,750 life points. It is the top source of Black mask.

“Centuries of hate pent up in its savage heart.”

Level 104MembersAggressiveAttacks with melee

Updated . Stats and drops from the RuneScape Wiki's monster and drop data (CC BY-NC-SA 3.0), checked 2026-10-09. Wiki page. Item sprites © Jagex.

Combat stats

Combat level
104
Life points
17,750
Combat XP per kill
887.5
Max hit
2,376
Armour
1,299
Attack style
Melee
Weakness
None
Aggressive
Yes
Poisonous
No

Slayer

Slayer level
None needed
Slayer XP per kill
1,388
Task
Jungle horrors
Assigned by
Mazchna, Chaeldar

Where

Wilderness

Ironman notes

  • Counts as a Slayer task from Mazchna and Chaeldar (task: jungle horrors). Killing it on task earns Slayer XP and points.
  • Aggressive: it attacks on sight, which is handy for AFK kills once your gear outclasses it.
  • Drops green charm, blue charm and gold charms for Summoning pouches.
  • Always drops Bones: Prayer XP as you go.
  • It can also roll the shared rare drop table (gems, key halves and bulk supplies); luck items improve those odds.

Best for

Only from this monster

No other monster drops these.

Versions

  • Story modelvl 104 · 17,750 LP
  • Normal modelvl 104 · 35,500 LP

Drops (31)

ItemQuantityRarity
Coins10000–150001/15
Bones#2 rate1Always
Reef relic (common)Best rate11/2
Green charm1320/1,000
Blue charm1255/1,000
Gold charm193.7/1,000
Dark animica stone spirit1–31/26.68
Reef relic (uncommon)11/14
Onyx dust10–201/227
Raw swordfish11/19.06
Huge spiky rune salvage11/44.5
Logs11/44.5
Prayer potion (1)11/133.4
Weapon poison++ (1)11/166.8
Darting shadow11/278
Reef relic (rare)11/400
Spirit sapphire#2 rate15/2,000
Sealed clue scroll (elite)11/500
Spirit emerald#2 rate13/2,000
Spirit ruby#2 rate12/2,000
Ragefire gland11/2,000
Oak casket11/2,500
Teak casket11/5,000
Mimic kill token11/9,896
Black maskOnly source11/10,000
Mahogany casket11/10,000
Starved ancient effigy11/16,642
Ancient scale11/20,080
Draconic energy11/20,080
Sealed clue scroll (master)11/50,000
Shadowy egg11/2,500,000

Most common first. “Best rate” and “#2/#3 rate” compare expected drops per kill with every other monster that drops the item. Rare drop table items are not repeated here.