In the Elemental Plane of Water, the actual trade of goods takes place at an elemental gem shop.
The interior of this gem shop is fitted with numerous water pipes used to transport passing visitors and various water elements. Among them, there is even a water element resembling a Cat Lamp, looking just like a Cat Bun with a glowing belly that lets out meows. After Melina examined it, she confirmed it was indeed a Cat Lamp that had disguised itself as a water element to sneak in and sell goods.
There are also Witches, and Banshees.
Chapter 970