Goblin Surfboard

Coming in Patch 10.2.7.

Riding Requirements:

Level 10
Apprentice Riding (ground)
Expert Riding (flying)

Source:

Tawny Seabraid in Stormwind City.
Wilder Seabraid in Stormwind City.
Shiri in Valley of Strength, Orgrimmar.
Zen'kala in Valley of Strength, Orgrimmar.

Notes:

This blue flying surfboard will be obtainable from the Trading Post in an upcoming month. Unfortunately, we can't say when exactly, as Blizzard don't announce Trading Post offerings ahead of time.

Travel Mode:

Ground (+60% or +100% speed)
Flying (+150%, +280% or +310% speed)

Speed depends on your riding skill.

Other Mounts Using the Same Model:

Pearlescent Goblin Wave Shredder

Soweezi's Vintage Waveshredder

Green Goblin Wave Shredder

More info on Wowhead:

Goblin Surfboard taught by Goblin Surfboard