TheWoWDBAs of 4.0.3a it appears that you must either deal the killing blow or fight the sisters solo. Had to do this one thrice since I was in a group.
Quest
Sisters of the Sea
A World of Warcraft quest in Azshara. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
You don't need to destroy the stones behind them to get credit for killing them, despite what the quest text says. Though if you're appropriate level for the quest you probably should, since it "de-elites" them.
I had to log out and back in after killing the sisters for the quest tracker to register the credit, seems to be a common bug lately as I have to do the same when doing the Argent Tournament dailies in Icecrown.
Quest facts
LevelLevel 5-30
ZoneAzshara
Quest ID14295
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(14295))
Requirements
FactionHorde only
Read from the Blizzard quest API.
What to do
StorylineAzshara, step 30 of 88
RewardsSea Sister Vest, 
Serpent-Crusher Gloves, Scaled Gloves of the Serpent, 21g, 5,150 XP
Sea Sister Vest, Serpent-Crusher Gloves, Scaled Gloves of the Serpent, 21g, 5,150 XPDescription
Two Naga witches have been masterminding the assault on this outpost. They've repelled direct attacks from some of my best grunts, but you can finish the job where others have failed. Seek out and slay Lady Silisthra and Lady Vesthra at the eastern edge of the cliffs, around the ruins of the ancient night elven colossus. You will first need to destroy the powerstones that give them their strength. Do not disappoint me, {class}!
Where to go
Pins are the quest’s own POI points from the current retail client, projected onto the in-game zone map. The game marks one blob as the quest’s turn-in; the rest are objective areas. Points that fall outside a map’s window are dropped rather than guessed at.
Turn-inObjective areaObjective areaIn-game waypoint: /way #76 50.7 75.3
Coordinates
- Turn-inAzshara 50.7, 75.3
/way #76 50.7 75.3 - Objective areaAzshara 62.8, 76.3
/way #76 62.8 76.3 - Objective areaAzshara 63.2, 79.4
/way #76 63.2 79.4
Map coordinates of the pins above. An area the client draws as a shape is given by the centre of its points.
Nearby on the Azshara map
- Twilight Skies about 50 yards
- Weigh Anchor about 840 yards
- Ready the Air Force about 910 yards
- Smoot's Samophlange about 910 yards
- All Aboard! about 1,020 yards
- Ready the Navy about 1,040 yards
- Pre-Flight Checklist about 1,060 yards
- Where Is My Warfleet? about 1,060 yards
- Beating the Market about 1,060 yards
- Ready the Ground Troops about 1,060 yards
Quests whose map markers the client places closest to this one on Azshara, nearest first. Distances are straight lines between the markers.
Getting there
Horde flight points closest to the quest’s turn-in marker on Azshara:
- Southern Rocketway, Azshara
- Bilgewater Harbor, Azshara
- Orgrimmar, Durotar
From the turn-in, the objective areas lie:
- Objective area
- Objective area
Straight-line distances in yards between the quest’s own map markers (QuestPOI) and the client’s flight-point positions (TaxiNodes); flight paths and terrain are not modelled.
Community notes from Wowhead · 10 comments
Top 3 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
The top 3 are shown in Top Comments above. Read all 10 on Wowhead.
Choose one of these rewards:
Reward details
Pick one of these
TypeCloth Chest
Item level6
BindingBinds when picked up
Armor3
Stats+1 Intellect, +2 Stamina
Suited toAffliction, Frost, Discipline, Holy, Fire, Arcane, Shadow, Destruction, Demonology
Sells to vendors for3 silver31 copper
TypeLeather Hands
Item level6
BindingBinds when picked up
Armor3
Stats+1 Agility or Intellect, +2 Stamina
Suited toBalance, Restoration, Mistweaver, Devourer, Vengeance, Feral, Guardian, Brewmaster, Subtlety, Outlaw, Assassination, Havoc, Windwalker
Sells to vendors for1 silver67 copper
TypeMail Hands
Item level6
BindingBinds when picked up
Armor4
Stats+1 Agility or Intellect, +2 Stamina
Suited toElemental, Restoration, Devastation, Preservation, Augmentation, Marksmanship, Beast Mastery, Survival, Enhancement
Sells to vendors for1 silver64 copper
Reputation: Orgrimmar +350
Founded by Thrall, this Horde capital city is home to many of the proud orc clans of Durotar.
Reputation group: Horde.
Other quests in Azshara that reward Orgrimmar reputation: The Eyes of Ashenvale (+250), Venison for the Troops (+250), Return of the Highborne? (+150), To Gut a Fish (+250), Report to Twocrush (+150), The Blackmaw Scar (+250).
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.
Storyline
Azshara
Part 30 of 88.
Previous: Report to Twocrush · Next: When Science Attacks
- 25Mortar the Point
- 26To Gut a Fish
- 27Investigating the Sea Shrine
- 28The Keystone Shard
- 29Report to Twocrush
- 30Sisters of the Sea
- 31When Science Attacks
- 32Segmentation Fault: Core Dumped
- 33Nine's Plan
- 34Raptor Raptor Rocket
- 35Mysterious Azsharite
- 36A Gigantic Snack
Showing steps 25 to 36 of 88.
Storyline order is the client’s own QuestLine data from the current retail build.
Where this quest fits
Before this quest
Taken from the storyline's own step order.
- Report to Twocrush
A magical barrier pulses around you, chilling your bones. You feel secure behind this enchanted wall. Torg Twocrush will want to know what you've discovered here!
After this quest
Taken from the storyline's own step order.
- When Science Attacks
Did you see the explosions on the way in? The Secret Lab is engulfed in flames! Again! If we don't stamp out those flames we're going to hit critical temperatacity and resonate into a meltdown cascade.
Also counted by Azshara Quests
Its criteria name 9 quests; others include:
- Arborcide
- Mystery of the Sarcen Stone
- The Terrible Tinkers of the Ruined Reaches
- Azsharite Experiment Number Two
- Farewell, Minnow
- Raptor Raptor Rocket
- The Conquest of Azshara
- Shore Leave
The storyline at a glance
Azshara has 88 steps, from Runaway Shredder! to The Conquest of Azshara.
Maps its steps are placed on (steps per map): Azshara (88).
Other storylines on the Azshara map
- Twilight Highlands
- Xylem Challenge
- A Golden Opportunity
- The Jade Forest, The Remains of Hellscream's Fist
- Mists of Pandaria
- Legion Blacksmithing
Steps, storylines and map placement from the client’s QuestLine, prerequisite and QuestPOI data; neighbouring quest text is Blizzard’s own (quest API), shortened to its opening sentences.
Achievements
Completing this quest counts toward this achievement.
- Azshara Quests: its criteria name 9 quests, this one included.
Guides for this zone
Guides and routes on this site that cover Azshara.
