Magic defence bonus: -10Magic Damage bonus: 0Attack bonus: 0Attack level: 50Combat level: 137Immune to venom: Not immuneNPC ID: 2261NPC ID: 5940Immune to poison: Not immuneHitpoints: 180Magic attack bonus: 0Slash defence bonus: 200Attack speed: 4Stab attack bonus: 0Attack style: CrushPage type: MonsterSize: 2Ranged Strength bonus: 0Name: Giant rock crabImage: 
Stab defence bonus: 225Experience bonus: 10Strength level: 80Max hit: 9Defence level: 200Crush defence bonus: 175Magic level: 1Crush attack bonus: 0Strength bonus: 0Slash attack bonus: 0Range attack bonus: 0Range defence bonus: 250Ranged level: 1
Giant rock crabs are massive versions of the weaker Rock crab. They lie in wait for prey, disguised as large boulders. When approached, they attack, unless they have become tolerant, in which case they remain as "boulders" - attempting to cast a spell on them gives the message "You can't attack this NPC."
Giant rock crabs are only initially aggressive if they are approached while dormant. Once they are moving and the targeted player is out of range, they stop being aggressive and will ignore players that don't attack them. They eventually become dormant boulders again after a while if they are not attacked.
The giant rock crab is one of few monsters in RuneScape that will retreat from battle when they become critically wounded. This can be troublesome, as they are found in a single-way combat area. This can be prevented by attacking them while their back is turned to a nearby wall, so that they move away from the player and back up into the wall. If they move too far away, the player will follow them and risk being attacked by another rock crab. There are several protruding sections of the walls in the area that can be used as safespots which are ideal as the crabs' main weakness is magic.
| Item |
Quantity |
Rarity |
Price |
High Alch |
 | Bones | 1 | Always | 79 | 0 |
This monster rolls the gem drop table.
| Item |
Quantity |
Rarity |
Price |
High Alch |
 | Uncut sapphire | 1 | Rare[d 1] | 448 | 15 |
 | Uncut emerald | 1 | Rare[d 1] | 677 | 30 |
 | Uncut ruby | 1 | Very rare[d 1] | 1,268 | 60 |
 | Nature talisman | 1 | Very rare[d 1] | 721 | 2 |
 | Uncut diamond | 1 | Very rare[d 1] | 2,895 | 120 |
 | Loop half of key | 1 | Very rare[d 1] | 10,064 | 60 |
 | Tooth half of key | 1 | Very rare[d 1] | 9,534 | 60 |
 | Rune javelin | 5 | Very rare[d 1] | 895 | 1,200 |
 | Rune spear | 1 | Very rare[d 1][d 2] | 11,766 | 12,480 |
 | Shield left half | 1 | Very rare[d 1][d 2] | 65,360 | 66,000 |
 | Dragon spear | 1 | Very rare[d 1][d 2] | 37,362 | 37,440 |
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Combat stats
