Waterfiends can be found in the Ancient Cavern underneath the Baxtorian Falls, Kraken Cove and Iorwerth Dungeon. They are moderately resistant to all forms of combat with the exception of crush attacks, which they are significantly more vulnerable against. They use a magic attack whose projectile resembles Water Blast, along with a magical ranged attack resembling ice arrows.
Duradel and Konar quo Maten are the only Slayer masters who assign waterfiends, and are a rare assignment. To unlock waterfiends as a task, players must have at least level 75 combat (unless they have requested Slayer masters ignore combat level requirements), and have progressed Barbarian training up to being prompted to access to the Ancient cavern as part of Barbarian Firemaking training.
Killing a waterfiend is a requirement for an elite clue scroll.
The simplest way to reach waterfiends is by accessing the Ancient Cavern, found south of the Barbarian Outpost. A games necklace allows for easy trips to the bank.
Because waterfiends use both magic and ranged, circumventing all of their damage through protection prayers is not possible. However, both of their attacks are rolled against the player's total magic resistance. Therefore, only armour to provide magic defence bonus, such as dragonhide or Karil's armour, is helpful when fighting waterfiends.
Using crush attacks is ideal for dealing damage. If a crush weapon is not available, some high level weapons, such as the Saradomin sword and the leaf-bladed battleaxe, possess a secondary crush attack which is sufficient given the very low crush defence bonus of waterfiends.
Alternatively, ranged is also effective as most magic-resistant armour also provides a substantial ranged attack bonus.
Using Protect from Missiles is recommended for those struggling to defend against waterfiends. Players should also consider including Mystic Might in their quick-prayers for the added magic bonus.
Regardless, players should also consider bringing high-healing foods (i.e. sharks, tuna potatoes, anglerfish) in order to prolong their stay.
Many of the waterfiends' drops are ideal for casting High Level Alchemy on.
You can safe spot waterfiends across the river using range.
The following drop rates are provided by Jagex, unless otherwise specified.
The average Waterfiend kill is worth 3,754.63.
|Staff of water||1||6/128||1,651||900|
|Rune med helm||1||2/128||11,109||11,520|
|Mystic water staff||1||1/128||25,060||25,500|
|Blue d'hide vambraces||1||1/128||1,488||1,800|
|Rune full helm||1||1/128||20,619||21,120|
|Mithril ore||10–20 (noted)||4/128||1,270–2,540||970–1,940|
|Raw lobster||18 (noted)||3/128||3,870||756|
|Raw shark||8 (noted)||3/128||4,936||816|
|Mithril bar||10–15 (noted)||1/128||6,000–9,000||1,800–2,700|
|Uncut sapphire||3 (noted)||1/128||1,224||45|
|Uncut emerald||3 (noted)||1/128||1,977||90|
|Uncut ruby||3 (noted)||1/128||3,873||180|
|Uncut diamond||3 (noted)||1/128||7,473||360|
There is a 9/128 chance of rolling the herb drop table.
There is a 4/128 chance of rolling the rare seed drop table. Watermelon seeds are an independent drop from the rare seed table.
|Water orb||6–10 (noted)||8/128||6,660–11,100||1,080–1,800|
|Vial of water||40–50 (noted)||4/128||160–200||40–50|
|Snape grass||20–30 (noted)||2/128||5,600–8,400||120–180|
There is a 3/128 chance of rolling the gem drop table.
|Nothing||N/A||1/85.49; Never[d 1]||N/A||N/A|
|Uncut sapphire||1||1/170.67; 1/86.67[d 2]||408||15|
|Uncut emerald||1||1/341.33; 1/173.33[d 2]||659||30|
|Uncut ruby||1||1/682.67; 1/346.67[d 2]||1,291||60|
|Chaos talisman||1||1/1,820.44; 1/924.44[d 2][d 3]||554||2|
|Nature talisman||1||1/1,820.44; 1/924.44[d 2][d 3]||743||2|
|Uncut diamond||1||1/2,730.67; 1/1,386.67[d 2]||2,491||120|
|Loop half of key||1||1/5,461.33; 1/2,773.33[d 2]||9,972||60|
|Tooth half of key||1||1/5,461.33; 1/2,773.33[d 2]||10,043||60|
|Rune javelin||5||1/5,461.33; 1/2,773.33[d 2]||875||1,200|
|Rune spear||1||1/87,381.33; 1/5,200[d 2][d 4]||11,852||12,480|
|Shield left half||1||1/174,762.67; 1/10,400[d 2][d 4]||65,330||66,000|
|Dragon spear||1||1/233,016.89; 1/13,866.67[d 2][d 4]||37,596||37,440|
- ↑ Jagex. Mod Ash's Twitter account. 3 August 2020. (Archived from the original on 3 August 2020.) Mod Ash: "Ah. It's the bit where you're being told about pyre ships, and Otto tells you to go jump in the whirlpool to get bones for them."