Giant Mantis Shrimp

Source
Giant Mantis Shrimp is fished from pools along the coasts of Pandaria, including Isle of Thunder and Timeless Isle. It is a cooking ingredient in several recipes, including certain raid feasts and for Shrimp Dumplings which is used to increase reputation with Ella of The Tillers.

They can also be purchased from Nam Ironpaw at Halfhill Market in Valley of the Four Winds; one Ironpaw Token purchases a Sack of Giant Mantis Shrimp which contains five of them.

Cooking

 * Shrimp Dumplings
 * Black Pepper Ribs and Shrimp
 * Banquet of the Wok
 * Great Banquet of the Wok
 * Bundle of Groceries

Objective of

 * A stack of 5 is needed for the quest Way of the Steamer (quest). (Which is rewarded back)
 * A stack of 20 can be placed into Bundle of Groceries for the quest Replenishing the Pantry.