Swamp Crab | OSRS Index

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Swamp Crab



Released		24 May 2018 (Update)
Members		Yes
Combat level		55
Size		1x1
Examine		No one likes crabs...

Combat info

XP bonus		+0%
Max hit		1
Aggressive		Yes
Poisonous		No
Attack style		Crush
Attack speed		4 ticks (2.4 seconds)
Respawn time		50 ticks (30 seconds)

Slayer info

Slayer level		None
Slayer XP		75 xp
Category		Crabs
Assigned by

Combat stats


75	1	1	50	50	1

Aggressive stats


+0	+0	+0	+0	+0	+0

Melee defence


+100		+100		+100

Magic defence


+100			35% weakness

Ranged defence


-55		-55		-55

Immunities

Poison		0% resistance
Venom		0% resistance
Cannons		Not immune
Thralls		Not immune

Open in DPS calculator
Advanced data

Monster ID		8297
Link		MOID

Swamp Crabs are aggressive monsters that disguise themselves as swampy logs. When a player approaches them, they will attack in a fashion that is identical to Rock Crabs. However, unlike other crabs, the aggression range for Swamp Crabs is only 1 square wide, and they are notably more resistant to melee and magic. They can be found in multi-combat areas directly south of Port Phasmatys and along the path leading from Port Phasmatys to Slepe. It is recommended that lower-level players wanting to kill these stay near Port Phasmatys, as the path traverses through the Haunted Woods and players may encounter Feral Vampyres and Leeches.

Like all other crabs, swamp crabs start off aggressive but will become tolerant of the player after ten minutes. As they must be active in order to be fought, players must reset their aggression timer once they become tolerant. After aggression is lost the crabs can only be examined as a Swampy log, giving the message "A bit of decaying wood".

If a player casts bloom while fighting a Swamp Crab, then its "shell" will grow three Mort Myre Fungi, which will be dropped once it is killed. A good tactic to obtain additional fungi is to lure a Swamp Crab next to a Rotting log, which will also have a chance of spawning some fungi after casting bloom.

Unlike other crabs, Swamp Crabs boast higher melee and magic defence, so it is generally not recommended to use these attack styles. Rather, due to their significantly reduced ranged defence, they are ideal for low-level to mid-level Ranged training.

Locations

Location	Levels	Members	Spawns	Map	League region
Haunted Woods	55		24	Show map	Morytania✓
Slepe	55		6	Show map	Morytania✓

Drops

Drop rates are estimated based on 266,368 samples from the Drop Rate Project, unless otherwise cited.

100%

	Item	Quantity	Rarity	Price	High Alch
	Mort myre fungus	3	Always^{[d 1]}	798	0

^ Only if the Bloom spell is used while being attacked by a Swamp Crab.

Weapons

Item	Quantity	Rarity	Price	High Alch
Bronze pickaxe	1	12/128	100	0
Bronze axe	1	6/128	95	9
Iron axe	1	5/128	112	33

Materials

Item	Quantity	Rarity	Price	High Alch
Logs	8	4/128	200	16
Oak logs	4	2/128	144	48
Copper ore	4	2/128	40	4
Tin ore	4	4/128	40	4
Iron ore	2	2/128	152	20
Coal	2	2/128	292	54
Willow logs	2	1/128	44	48
Mort myre fungus	1	2/128	266	0
Yew logs	1	1/128	110	96

Coins

Item	Quantity	Rarity	Price	High Alch
Coins	4–10	19/128	4–10	4–10
Coins	42	8/128	42	42
Coins	120	6/128	120	120

Other

Item	Quantity	Rarity	Price	High Alch
Seaweed	2–8	4/128	10–40	2–8
Knife	4	29/128	396	12
Chisel	1	3/128	139	0
Fishing bait	12	2/128	60	12
Edible seaweed	3	2/128	33	3
Bark	1–2	9/128	42–84	0
Spinach roll	1	1/128	450	0
Casket	1	1/128	714	30

Gem drop table

There is a 1/128 chance of rolling the gem drop table.

Item	Quantity	Rarity	Price	High Alch
Nothing	N/A	1/256.47; Never^{[d 1]}	N/A	N/A
Uncut sapphire	1	1/512; 1/260^{[d 2]}	228	15
Uncut emerald	1	1/1,024; 1/520^{[d 2]}	473	30
Uncut ruby	1	1/2,048; 1/1,040^{[d 2]}	1,087	60
Nature talisman	1	1/5,461.33; 1/2,773.33^{[d 2]}	268	2
Uncut diamond	1	1/8,192; 1/4,160^{[d 2]}	2,439	120
Rune javelin	5	1/16,384; 1/8,320^{[d 2]}	675	1,200
Loop half of key	1	1/16,384; 1/8,320^{[d 2]}	9,756	60
Tooth half of key	1	1/16,384; 1/8,320^{[d 2]}	9,887	60
Rune spear	1	1/262,144; 1/15,600^{[d 2]}^{[d 3]}	11,599	12,480
Shield left half	1	1/524,288; 1/31,200^{[d 2]}^{[d 3]}	65,355	66,000
Dragon spear	1	1/699,050.67; 1/41,600^{[d 2]}^{[d 3]}	38,438	37,440

^ The "nothing" drop is removed while wearing a ring of wealth.
^ ^2.00 ^2.01 ^2.02 ^2.03 ^2.04 ^2.05 ^2.06 ^2.07 ^2.08 ^2.09 ^2.10 The drop rate is increased while wearing a ring of wealth due to the "nothing" drop being removed.
^ ^3.0 ^3.1 ^3.2 Only dropped if Legends' Quest has been finished; if not, a talisman is dropped instead.

Tertiary

	Item	Quantity	Rarity	Price	High Alch
	Clue scroll (easy)	1	1/96^{[d 1]}^{[d 2]}^[1]	Not sold	12

^ The easy clue scroll drop rate increases to 1/91 after unlocking the easy Combat Achievements rewards tier.
^ Clue scrolls will drop as scroll boxes after the completion of X Marks the Spot.

Changes

Date	Changes
25 June 2025 (Update)	Swamp crabs now have a 35% elemental weakness to earth spells.
26 March 2025 (Update \| poll)	Crabs can now be assigned as a Slayer task by Mazchna, Vannaka, and Chaeldar.

References

^ Jagex. Mod Tide's Twitter account. 24 May 2019. Archived from the original on 24 May 2019. Mod Tide: "I know its been a while since the clue expansion but here is the information on clue scroll drop rates and loot chances! If anything changes I will keep you posted."

v t e Bloom items
Pouches	Druid pouch
Items	Fungus Stem Pear Flower
Bloomables	Small bush Rotting log Rotting branch Dead vine Flowering vine Swamp Crab
Casting items	Silver sickle (b) Emerald sickle (b) Enchanted emerald sickle (b) Ivandis flail Ruby sickle (b) Enchanted ruby sickle (b) Blisterwood sickle Blisterwood flail Diamond sickle (b) Enchanted diamond sickle (b) Blisterwood sickle (e) Hallowed flail

Slepe

NPCs

Rulers	Damien Leucurte Lord Crombwick Lady Crombwick
Townsfolk	Andras Carl Child Debra Don Erodoeht Hameln the Jester Hanchen the Hound Kurt Lahsram Lector Gura Nemishka Painted One Roy Sister Sevi Sister Toen Sister Yram Sleepwalkers Tanya Yenrab
Sisterhood Sanctuary	Daer Krand Kroy Lithil Lumiere Oath Lord D'rows Oathbreaker B'ats Oathbreaker E'piws Oathbreaker M'als Shura Sister Aseret Sister Naoj Sister Salohcin Sister Senga Strong Ronny
Monsters	Chaos druid Chaos druid warrior Greater demon Lesser demon Pyrefiend Pyrelord Swamp Crab The Nightmare ^{(Phosani's Nightmare)} Vampyre Juvenile Vyrewatch

Items

Scenery

Slepe	Altar of Zamorak Zamorak's statue
Sisterhood Sanctuary	Knight statue Hooded statue Hidden statue Statue with scythe Stone tablet Broken chain Totem

Locations

Source site	Old School RuneScape Wiki
Canonical source	Swamp Crab
Content license	CC BY-NC-SA 3.0
License status	declared
Picture	Swamp Crab · file details