Juvenile boulder crab
Juvenile boulder crab is a level 1 free-to-play monster found in Havenhythe, with 550 life points. It is weak to crush weapons. It is the top source of Igneous geode, Sedimentary geode and Copper ore.
“Consumes rock to grow larger.”
Level 1Free-to-play
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
- 1
- Life points
- 550
- Combat XP per kill
- 27.5
- Max hit
- 20
- Armour
- 110
- Weakness
- Crush
- Immune to
- Poison
- Aggressive
- No
- Poisonous
- No
Slayer
- Slayer level
- None needed
- Assigned by
- Not a Slayer task
Where
Havenhythe
Ironman notes
- Weak to crush weapons: bring that style for faster kills.
- Immune to poison.
Best for
Best drop rate anywhere
Of every monster that drops these, this one gives the most per kill.
- Copper ore7/128
- Wendlewick seed3/128
Easiest monster for
The lowest-level monster that drops these, if the best one is out of reach.
- Tin ore7/128
- Raw lobster6/128
- Edible seaweed4/128
- Empty oyster2/128
- Oyster3/128
- Oyster pearl3/128
Drops (15)
| Item | Quantity | Rarity |
|---|---|---|
| Coins | 50–250 | 19/128 |
| LimestoneBest rateEasiest | 1 | Always |
| Fishing baitEasiest | 5–10 | 13/128 |
| SeaweedEasiest | 1–3 | 12/128 |
| Raw sardine#2 rate | 1–2 | 12/128 |
| Copper oreBest rateEasiest | 1–2 | 7/128 |
| Tin oreEasiest | 1–2 | 7/128 |
| Raw lobsterEasiest | 1 | 6/128 |
| Edible seaweedEasiest | 1 | 4/128 |
| Empty oyster#3 rateEasiest | 1–2 | 2/128 |
| OysterEasiest | 1 | 3/128 |
| Oyster pearl#3 rateEasiest | 1 | 3/128 |
| Wendlewick seedBest rateEasiest | 1 | 3/128 |
| Igneous geodeOnly source | 1 | 2/128 |
| Sedimentary geodeOnly source | 1 | 2/128 |
Most common first. “Best rate” and “#2/#3 rate” compare expected drops per kill with every other monster that drops the item.