Sea snakes 
Vannaka 
Requirements
- Slayer Level40
- Combat Level50
- Also NeedsRoyal Trouble
Combat & Weakness
- Attack StyleCrush
- Max Hit6
- Hitpoints50
- AggressiveNo
- Weak To Earth (+20%)
Stab 0 Slash 0 Crush 0 Magic 0 Ranged 0
No notable immunities
Locations
Also counts: Sea Snake Hatchling, Sea Snake Young
Watch Out
No editorial notes for this task yet — check the wiki's strategy section.
Loot & Odds · Sea Snake Hatchling
At 151 kills: 69.4% chance of at least one Casket.
100% (1)
| Item | Qty | Rate | Chance in task | Expected | |
|---|---|---|---|---|---|
 151 | Bones | 1 | Always | 100% | 151 |
Runes and ammunition (3)
| Item | Qty | Rate | Chance in task | Expected | |
|---|---|---|---|---|---|
 35 | Water rune | 15 | 1/64 | 90.7% | 35.4 |
 2 | Mist rune | 1 | 1/64 | 90.7% | 2.4 |
 9 | Broad arrows | 4 | 1/64 | 90.7% | 9.4 |
Coins (4)
Other (11)
| Item | Qty | Rate | Chance in task | Expected | |
|---|---|---|---|---|---|
 24 | Adamant dart tip | 2 | 1/12.8 | >99.99% | 23.6 |
 236 | Fishing bait | 50 | 1/32 | 99.2% | 236 |
 14 | Pearl bolt tips | 3 | 1/32 | 99.2% | 14.2 |
 4 | Water orb | 1 | 1/42.7 | 97.2% | 3.5 |
 9 | Raw bass | 2 | 1/32 | 99.2% | 9.4 |
 2 | Raw lobster | 1 | 1/64 | 90.7% | 2.4 |
 12 | Seaweed | 5 | 1/64 | 90.7% | 11.8 |
 12 | Edible seaweed | 5 | 1/64 | 90.7% | 11.8 |
 2 | Oyster pearl | 2 | 1/128 | 69.4% | 2.4 |
 1 | Oyster pearls | 1 | 1/128 | 69.4% | 1.2 |
 1 | Casket | 1 | 1/128 | 69.4% | 1.2 |
Gem drop table (12)
| Item | Qty | Rate | Chance in task | Expected | |
|---|---|---|---|---|---|
 | Nothing | N/A | 1/256 | 44.6% | 0.59 |
 | Uncut sapphire | 1 | 1/512 | 25.6% | 0.29 |
 | Uncut emerald | 1 | 1/1,024 | 13.7% | 0.15 |
 | Uncut ruby | 1 | 1/2,048 | 7.11% | 0.07 |
 | Chaos talisman | 1 | 1/5,461 | 2.73% | 0.03 |
 | Uncut diamond | 1 | 1/8,192 | 1.83% | 0.02 |
 | Rune javelin | 5 | 1/16,384 | 0.917% | 0.05 |
 | Loop half of key | 1 | 1/16,384 | 0.917% | <0.01 |
 | Tooth half of key | 1 | 1/16,384 | 0.917% | <0.01 |
 | Rune spear | 1 | 1/262,144 | 0.058% | <0.01 |
 | Shield left half | 1 | 1/524,288 | 0.029% | <0.01 |
 | Dragon spear | 1 | 1/699,051 | 0.022% | <0.01 |
Tertiary (1)
| Item | Qty | Rate | Chance in task | Expected | |
|---|---|---|---|---|---|
.png) 1 | Clue scroll (medium) | 1 | 1/128 | 69.4% | 1.2 |
Where to Go
✓ verified against the OSRS Wiki · revision 15225906 · fetched 2026-08-04 · CC BY-NC-SA 3.0