Smoother Green Spiked Dragon Turtle

There is one tameable creature with this look.

Smoother Green Spiked Dragon Turtle
Can Be Tamed
The Pool of Ask'ar, Blackfathom Deeps (Dungeon)
Changed appearance in 6.0. Used to have ancient sea turtle look.
* Level scaling: In Shadowlands most NPCs will scale with the Hunter's level, within the constraints of their level range. Hunters can tame regular NPCs up to 2 levels higher than them, but can only tame elite NPCs of the hunter's level or below.