Ghamoo-ra lives on the small island in the second cavern of the instance. He roams around the center of the landmass and is surrounded by several other turtles. The additional turtles are neutral, and Ghamoo-ra can be engaged without disturbing these other beasts.
The fight with Ghamoo-ra is fairly straightforward, although due to Ghamoo-ra's high armor value the encounter can last a fair amount of time if your group is melee heavy or generally low on DPS. He only casts Trample, which is an AoE physical damage spell. It can be blocked.
Hunters will find that it is possible to tame Ghamoo-ra. Prior to Patch 3.0.2 he was one of two low level instance turtles who knew the turtle-specific skill Shell Shield (Level 1) (and the general skill Bite (Level 4)).
Ghamoo-ra may be named after the film turtle-monster, Gamera.