Call of Water (Exodar, 3)

In this third part of the Shaman Call of Water questchain, Aqueous asks you to collect Foul Essences.

Objectives
Collect 6 Foul Essences and return them to Aqueous in the Hidden Reef at Bloodmyst Isle.
 * Foul Essence

Description
In balance with the other elements, water is the source and sustenance of all living things. It gives and nurtures life, and all rely upon it for their existence. Yet, when polluted, it also brings life to an end.

We must determine the extent of the damage that has been done. To the southwest is one such contaminated body of water that has come to be known as the Foul Pool. Travel there and extract the foul essence from the water spirits that inhabit the pool.

Rewards
You will receive:
 * 1550 XP

Progress
Have you collected the foul essences of my unfortunate sisters so soon, ?

Completion
Thank you, Shaman. These should be enough so that I can examine this corruption. Then we will have a better idea of how to proceed.