Brinedeep Bottom-Feeder

These elusive fish prefer to skulk in the deepest reaches of the Great Sea, searching the darkness for food.

Riding Requirements:

This mount is available to all eligible characters on your account.
Level 10
Apprentice Riding

Source:

Conjurer Margoss in Dalaran. Requires Best Friend with Conjurer Margoss.
Cost: 100 (reputation discounts apply for some factions)

Notes:

One of the more unusual mounts to be added in Legion. To obtain this aquatic mount you must attain Best Friend status with a new fishing NPC, Conjurer Margoss, located on one of the small floating islands surrounding Dalaran. Margoss may be reached by fishing up an Emblem of Margoss from Swirling Whorls in the Dalaran Underbelly. The currency used to purchase this mount is Drowned Mana, which may also be fished up in Legion. You'll also need a lot more Drowned Mana to achieve Best Friend status with Margoss!

Introduced in:

Patch 7.0.3

Travel Mode:

Ground (N/A speed)
Swimming (+100% speed)

Speed depends on your riding skill.

More info on Wowhead:

Brinedeep Bottom-Feeder taught by Brinedeep Bottom-Feeder