Kelp'thar Forest is the first zone in the undersea region known as Vashj'ir. It is one of the two starting zone for all players level 80 and higher (the other is Mount Hyjal). The forest features a vast array of aquatic life and plants. There is a mixed focus between the main quests involving the naga and auxiliary quests introducing players to Vashj'ir's new under water mechanics. The most noticeable feature of the Kelp'thar Forest is found along the southern edge of the zone in what is known as the Lightless Reaches.
The Kelp'thar Forest is the smallest of the three underwater zones of Vashj'ir and found at the northeastern most part. Kelp'thar is separated by the Shimmering Expanse by the Lightless Reaches, a large chasm, much in the same way land zones are separated by mountains.
The forest's most notable features would be the seaweed forests and overly sized shells found throughout the region. There exists a few ruins, but not as many as would be found in the Shimmering Expanse. The region mostly consists of sunken vessels that were struck down by a sea monster while heading to the newly risen landmass. The most common wildlife includes sea turtles, sharks, crabs, and other fish life.
During the World of Warcraft: Cataclysm beta this area was known was Kelp Forest.
Kelp'thar Forest might best suit those who do not plan on spending gold for additional riding skill, but instead get the free [Vashj'ir Seahorse] mount which makes it considerably faster to level in Kelp'thar Forest, Shimmering Expanse and Abyssal Depths.
Kelp'thar Forest
Naga
Murloc
Gilblin
Sea giant
Smuggler's Scar
The Clutch
Horde
Alliance
[Vashj'ir Seahorse] mount which makes it considerably faster to level in Kelp'thar Forest, Shimmering Expanse and Abyssal Depths.
Patch 7.3.5 (2018-01-16): Level scaling implemented, previous zone level: 80 - 82. 
