Head up and down the coast North of Theramore. The turtles are level 36-37, and the droprate is fairly low, so you'll be killing a lot of them.
They do drop the Thick Scaly Tails and Speckled Shell Fragments, though, so it's not all that bad of a grind. They're gray, but they sell for a decent amount to vendors.
Quest
Mudrock Soup and Bugs
A World of Warcraft quest in Dustwallow Marsh. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
Confirmed quite low drop rate. However, the turtles drop Turtle Meat (surprise!) that can be used for Soothing Turtle Bisque quest in Southshore: http://www.wowhead.com/?quest=555 The reward is a recipe by the same name, which isn't sold by any vendors as far as I know: http://www.wowhead.com/?item=3737
Before you pick up this quest, Go see Angus Stern in Stormwind City, for the quest called "Morgan Stern". It is a prequest to this one.
Quest facts
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(1204))
Description
I'm working on a dish I call "Mudrock Soup and Bugs." I still need the major ingredients, and... well, I don't think I'd last long trudging through Dustwallow Marsh! So, {name}, can you do some hunting for me? First, I need the tongues of Mudrock turtles. You can find Mudrocks along the coast, mostly around the bay. But I don't want just any tongues! I hear that the tongues of some Mudrocks are forked... They say the forked tongues have a distinct flavor, and I want that flavor in my dish...
Community notes from Wowhead · 33 comments
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Reward details
Reputation: Stormwind +250
One of the last bastions of human power, this Alliance capital is ruled by the young but wise king, Anduin Wrynn.
Reputation group: Alliance.
Other quests in Dustwallow Marsh that reward Stormwind reputation: Stinky's Escape (+250), ... and Bugs (+250), Reinforcements From Theramore (+75), Traitors Among Us (+250), Propaganda War (+250), Discrediting the Deserters (+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.
Guides for this zone
Guides and routes on this site that cover Dustwallow Marsh.