Sea Turtle (mount)

The Sea Turtle is an aquatic/land mount that improves swim speed by 60% normally, and by 300% if the rider has Sea Legs in Vashj'ir. She provides no speed bonus on land and does not scale with riding skill. The Sea Turtle was the first official aquatic mount in the game, and currently the second of two amphibious aquatic mounts, the first being the Riding Turtle.

Source
This mount is a very rare catch that may be obtained while fishing in level 70+ zones, and Shipwreck Debris around Darkmoon Island.

If you have a Level 3 Fishing Shack in your garrison, this can also drop from Lunarfall Cavedweller/Frostdeep Cavedweller from fishing in your garrison pond.

Icon description
"Summons and dismisses a rideable Sea Turtle. This mount can't move very quickly on land, but she's a great swimmer.

Due to her calm and steady nature, swim speed is not affected by effects that increase or decrease mount speed."

Mount Journal
Often caught by fishermen at a young age, these mounts are much more comfortable in the water than they are on land.

Achievements
Obtaining this mount will earn the achievement Turtles All the Way Down.