Hydromancer

The name hydromancer (aka aquamancer) is generally accepted to refer to spellcasters who specialize in water-based spells or hydromancy. In World of Warcraft, there are two named hydromancers (Hydromancer Velratha, a troll in Zul'Farrak and Hydromancer Thespia, a naga in the Steamvault) and murloc Tidewalker Hydromancers found in Serpentshrine Cavern.

Kul Tiras had many hydromancers in its navy when it attacked Durotar.