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RSGOALS · RS3
Long bone
Signature drop: Long bone

Giant Sea Snake

Giant Sea Snake is a level 63 members monster found in the Fremennik Province, with 13,500 life points. It needs 40 Slayer to damage and is weak to slash weapons. It is the top source of Heavy box, Pearl bolt tips and Broad arrow.

“A big snake that lives in the sea. How did it get in here?”

Level 63MembersSlayer 40AggressivePoisonousAttacks with ranged

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
63
Life points
13,500
Combat XP per kill
675
Max hit
675
Armour
732
Attack style
Ranged
Weakness
Slash
Immune to
Poison
Aggressive
Yes
Poisonous
Yes

Slayer

Slayer level
40
Assigned by
Not a Slayer task

Where

Fremennik · Quest only

Ironman notes

  • You need 40 Slayer to damage it, so plan the Slayer levels before the trip.
  • Weak to slash weapons: bring that style for faster kills.
  • Immune to poison.
  • Its attacks can poison you: carry antipoison or wear something that blocks poison.
  • Aggressive: it attacks on sight, which is handy for AFK kills once your gear outclasses it.
  • A herb source: it drops 11 kinds of grimy herb, useful for Herblore without farming runs.
  • Drops 23 kinds of seed, which keeps farm patches stocked.
  • Always drops Big 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.
  • Mostly met during a quest, so it may not be farmable afterwards.

Best for

Only from this monster

No other monster drops these.

Best drop rate anywhere

Of every monster that drops these, this one gives the most per kill.

Easiest monster for

The lowest-level monster that drops these, if the best one is out of reach.

Drops (56)

ItemQuantityRarity
Coins4441/128
Fishing bait504/128
Big bones1Always
Heavy boxOnly source1Always
Giant snake spineBest rateEasiest11/4
Water rune152/128
Adamant dart tipBest rateEasiest210/128
Pearl bolt tipsBest rateEasiest34/128
Edible seaweed#3 rate52/128
Seaweed52/128
Broad arrowBest rateEasiest42/128
Raw bass#3 rateEasiest24/128
Water orb13/128
Mist runeEasiest12/128
Oyster pearl21/128
Raw lobster12/128
Limpwurt seed11/68.8
Strawberry seed11/72
Marrentill seed11/76.7
Grimy guam11/102.4
Jangerberry seed11/102.9
Tarromin seed11/112.8
Wildblood seed11/114.2
Casket11/128
Oyster pearlsEasiest11/128
Sealed clue scroll (medium)11/128
Grimy marrentill11/136.5
Watermelon seed11/151
Harralander seed11/164.3
Grimy tarromin11/182
Grimy harralander11/234.1
Ranarr seed11/240.1
Spirit weed seed11/246.4
Whiteberry seed11/283.7
Grimy ranarr11/297.9
Bittercap mushroom spore11/334.4
Toadflax seed11/360.1
Long boneBest rate11/400
Grimy irit11/409.6
Cave nightshade seed11/520.1
Irit seed11/520.1
Grimy avantoe11/546.1
Grimy kwuarm11/655.4
Poison ivy seed11/720.2
Cactus seed11/780.2
Grimy cadantine11/819.2
Avantoe seed11/851.1
Kwuarm seed11/1,040.3
Grimy dwarf weed11/1,092.3
Grimy lantadyme11/1,092.3
Snapdragon seed11/1,872.5
Cadantine seed11/2,340.6
Lantadyme seed11/3,120.8
Dwarf weed seed11/4,681.1
Curved bone#2 rate11/5,000
Torstol seed11/9,362.3

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.