Caverndark Nightmare
Drops from Caverndark Terror. As if a dark, underwater cave wasn't nightmarish enough, these things exist -- and they love it there. Aquatic type. Pet: / Rare: Location: Cageable: Yes Notes: The coordinates are for the cave entrance.
The 
Caverndark Nightmare is a pet that drops from Caverndark Terror in Nazjatar.
Guide awaiting review
Locate and kill Caverndark Terror
Travel to Nazjatar and find Caverndark Terror, a rare spawn located in a cave. The rare can appear in multiple locations within the cave and is surrounded by many crabs.
Obtain the pet drop
Defeat Caverndark Terror repeatedly until Caverndark Nightmare drops. Alternatively, purchase the pet from other players on the Auction House.
Tips
The drop rate from Caverndark Terror is extremely low; many players have reported farming the rare daily for extended periods without receiving the pet.
