It's a little game I like to call, "Whack the Naga Lord."

Fathom-Lord Karathress is the 3rd boss you will encounter in the World of Warcraft's Serpentshrine Caverns. He is a Naga lord and reports directly to Lady Vashj. Currently he is responsible for guarding the prisoner, Seer Olum. See how to destroy him in our new guide!

When you fight Fathom-Lord Karathress you will also have to deal with
the three guards with him: Caridbis the priest, Sharkkis the hunter, and
Tidalvess the shaman. Each has their own set of abilities that must be
dealt with.

Get your strategy at Ten Ton Hammer's WoW site.