Wikia

**Rock lobster**
Release date	1 August 2005 (Update)
Members?	Yes
Combat level	156
XP per kill	Unknown edit
Always drops	Raw lobster
Examine text	A Rock. (when disguised), It wasn't a rock... It was a rock lobster! (when attacking)
Combat stats
1500	150 (approx)
Other
No	Unknown edit
Attack Speed	Speed 8 (Interval: 1.2 seconds)
Yes	No
Melee;	<img alt="Magic weakness icon" src="data:image/gif;base64,R0lGODlhAQABAIABAAAAAP///yH5BAEAAAEALAAAAAABAAEAQAICTAEAOw%3D%3D" width="26" height="26" data-image-name="Magic weakness icon.png" data-image-key="Magic_weakness_icon.png" data-src="http://images3.wikia.nocookie.net/__cb20121129175237/runescape/images/a/ac/Magic_weakness_icon.png" class="lzy lzyPlcHld" onload="if(typeof ImgLzy=="object"){ImgLzy.load(this)}" /><noscript><img alt="Magic weakness icon" src="http://images3.wikia.nocookie.net/__cb20121129175237/runescape/images/a/ac/Magic_weakness_icon.png" width="26" height="26" data-image-name="Magic weakness icon.png" data-image-key="Magic_weakness_icon.png" /> Magic;

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Rock lobsters are found in the Waterbirth Island Dungeon's fifth sub-level, in room 16. They are similar to Giant Rock Crabs in the fact that they are initially disguised as large rocks, but they will attack the player as they approach. They have very high defence (though they are weak to magic attacks) and can hit up to 150 life points, but rarely hit over 110 life points. Their attack speed is two bars faster than the Abyssal whip's (as fast as darts on rapid fire), making them incredibly dangerous. Rock lobsters are commonly killed by wealthy players because of their common crimson charm drops. However with the use of charged battle robes, a reward from the Fist of Guthix minigame, the price is significantly decreased. Using the right technique, such as ice bursting or ice barraging, killing rock lobsters is one of (if not) the fastest way(s) to obtain charms in RuneScape.

Obtaining crimson charms

An effective but expensive method of killing rock lobsters is using the Ancient Magicks spells Ice Burst or Ice Barrage.

Strategy

Main article: Rock lobster/Strategies

Drops

Runes

	Quantity	Rarity	GE Market Price
Earth rune		2 Common	9
Water rune		2 Common	13
Pure essence	4, 8	2 Common	340–680

Talismans

	Quantity	Rarity	GE Market Price
Fire talisman	1	3 Uncommon	2,018
Air talisman	1	3 Uncommon	145
Cosmic talisman	1	3 Uncommon	210
Body talisman	1	3 Uncommon	187
Water talisman	1	3 Uncommon	4,721

Charms

Charm drop percentages
No charms
46–49%	16–18%	8–10%	23–25%	3–4%

Represents 90% confidence range, based on a sample of 3,760 kills.
2 charms are dropped at a time.

Please add to the log (only if 15 or more creatures killed).

Herbs

	Quantity	Rarity	GE Market Price
Grimy guam	1	3 Uncommon	539
Grimy marrentill	1	3 Uncommon	44
Grimy tarromin	1	3 Uncommon	249
Grimy harralander	1	3 Uncommon	652
Grimy ranarr	1	3 Uncommon	2,160
Grimy irit	1	3 Uncommon	1,743
Grimy avantoe	1	3 Uncommon	4,128
Grimy kwuarm	1	3 Uncommon	2,471
Grimy cadantine	1	3 Uncommon	2,507
Grimy lantadyme	1	3 Uncommon	7,850
Grimy dwarf weed	1	3 Uncommon	8,195

Equipment

	Quantity	Rarity	GE Market Price
Steel arrow	4–7	2 Common	48–84
Iron arrow	2–17	2 Common	16–136
Fremennik shirt (brown)	1	4 Rare	131
Fremennik blade	1	4 Rare	Not sold

Seeds

	Quantity	Rarity	GE Market Price
Onion seed	1	3 Uncommon	2
Potato seed	1	3 Uncommon	2
Cabbage seed	1	3 Uncommon	3
Tomato seed	1	3 Uncommon	1
Watermelon seed	1–3	5 Very rare	2,010–6,030
Evil turnip seed	1	5 Very rare	149

Other

	Quantity	Rarity	GE Market Price
Seaweed	4	2 Common	1,684
Edible seaweed	4	2 Common	392
Raw lobster	1	2 Common	128
Lobster pot	1	2 Common	52
Tinderbox	1	2 Common	111
Soda ash	1	3 Uncommon	485
Coins	355	3 Uncommon	Not sold
Snape grass	1	3 Uncommon	337
Clue scroll (medium)	1	4 Rare	Not sold
Spin ticket	1	4 Rare	Not sold
Court summons	1	5 Very rare	Not sold
Starved Ancient Effigy	1	5 Very rare	Not sold

Rare drop table drops

This monster drops items from the rare drop table.
The ring of wealth improves the chances if equipped but is not required to access the table.

Show/hide rare drop table

	Quantity	Rarity	GE Market Price
Coins	250; 381; 450; 3,000; 9,000; 12,000	2 Common	Not sold
Uncut sapphire	1	2 Common	1,142
Uncut emerald	1	2 Common	1,792
Uncut ruby	1	2 Common	3,576
Loop half of a key	1	3 Uncommon	8,548
Tooth half of a key	1	3 Uncommon	12,668
Uncut diamond	1	3 Uncommon	7,160
Uncut dragonstone	1	4 Rare	14,935
Dragonstone	1	4 Rare	9,966
Dragon dagger	1	3 Uncommon	17,221
Rune battleaxe	1	4 Rare	24,627
Rune javelin	5	4 Rare	1,270
Adamant javelin	20	5 Very rare	920
Rune spear	1	5 Very rare	12,048
Dragon spear	1	5 Very rare	36,856
Dragon dagger	50 (noted)	5 Very rare	861,050
Rune kiteshield	1	5 Very rare	32,145
Shield left half	1	5 Very rare	65,188
Dragon helm	1	5 Very rare	59,636
Adamant bolts	200	3 Uncommon	17,400
Rune arrow	150–200; 500	4 Rare	29,850–199
Onyx bolts	150	4 Rare	1,303,050
Battlestaff	200 (noted)	4 Rare	1,665,400
Air orb	1,000 (noted)	4 Rare	1,418,000
Fire orb	1,000 (noted)	4 Rare	1,612,000
Vecna skull	1	5 Very rare	138,745
Water talisman	1	3 Uncommon	4,721
Earth talisman	25–35 (noted)	3 Uncommon	19,825–27,755
Fire talisman	25–35 (noted)	3 Uncommon	50,450–70,630
Chaos talisman	1	3 Uncommon	227
Nature talisman	1	3 Uncommon	270
Pure essence	500–15,000 (noted)	3 Uncommon	42,500–1,275,000
Nature rune	47–77	4 Rare	5,217–8,547
Soul rune	20	4 Rare	2,420
Death rune	50; 121	4 Rare	93
Blood rune	50	4 Rare	8,150
Raw swordfish	125 – 250; 1,000 (noted)	3 Uncommon	37,750–302
Raw shark	250–500 (noted)	3 Uncommon	246,500–493,000
Big bones	150 – 500 (noted)	3 Uncommon	67,350–224,500
Coal	150–7,500 (noted)	3 Uncommon	41,700–2,085,000
Adamantite ore	150–800 (noted)	3 Uncommon	227,700–1,214,400
Silver ore	100 (noted)	4 Rare	10,500
Adamant bar	1,000–7,000 (noted)	4 Rare	3,168,000–22,176,000
Runite ore	100 (noted)	4 Rare	1,038,500
Rune bar	1,50,150 (noted)	4 Rare	13,002–1,950,300
Clean ranarr	33 (noted)	3 Uncommon	74,448
Clean toadflax	25–250 (noted)	3 Uncommon	95,050–950,500
Clean snapdragon	30–120 (noted)	3 Uncommon	106,530–426,120
Clean torstol	10–100 (noted)	3 Uncommon	118,420–1,184,200
Saradomin brew (4)	250 (noted)	5 Very rare	181,000
Watermelon seed	3	3 Uncommon	6,030
Yew seed	1–50	4 Rare	71,385–3,569,250
Magic seed	1–6	4 Rare	160,602–963,612
Palm tree seed	10	4 Rare	1,064,590
Snapdragon seed	1	4 Rare	2,196
Torstol seed	1–31	4 Rare	78,509–2,433,779
Fellstalk seed	2	4 Rare	932
Yew logs	100–20,000 (noted)	4 Rare	56,100–11,220,000

Trivia

The examine is likely a reference to the B-52's song "Rock Lobster".
After the ring of wealth update, the charm drop rates of hellhounds and rock lobsters had "gone walkabouts"^[1]. This has now been fixed.
The rock lobster's combat level was changed from 127 to 156 in February 2011.
If you manage to get the Rock Lobster within a distance while you're running to another place, sometimes, the intact version (the disguised as a rock) will be seen moving.

References

^ Mod Sneakman. "answer to". 16 March 2011. Hellhounds Nerf? Forums. *

[0] Mod Sneakman. "answer to". 16 March 2011. Hellhounds Nerf? Forums. *

[1]