Juvenile Brineshell
Drops from Whispering Reef Salvage. Even young brineshell are drawn to the line in the sky that meets the waves, it calls them. Aquatic type. The is a Brineshell pet available from Island Expeditions. The Juvenile Brineshell is required for .
The 
Juvenile Brineshell is a Battle for Azeroth pet obtained as a drop from Island Expeditions, and is also cageable and available for purchase on the Auction House.
Guide awaiting review
Queue for Island Expeditions
Queue for Island Expeditions to have a chance at obtaining the Juvenile Brineshell. To improve your odds, prioritize killing named rares, looting treasures, and focusing on the same types of mobs associated with this pet, as well as any invading mobs that appear.
Try the Treasure Map Mission
The 
Treasure Map can offer a mission that rewards the Juvenile Brineshell directly, along with 1500 Azerite Power as a bonus reward.
Check the Auction House
The Juvenile Brineshell is cageable and tradeable, so it can be purchased directly from other players on the Auction House, which also grants credit toward the achievement I'm Here for the Pets.
Tips
The Juvenile Brineshell's Pet Battle abilities are: Grasp, Toxic Skin, Whirlpool, Pinch, Spiny Carapace, and Wish. See the video guide for more details.
