Atlantic: The Octonauts and the Pearl Pony

Atlantic: The Octonauts and the Pearl Pony is the 59th episode of Season 21.

Summary
While traveling with Ariel, the Octonauts discover a heard of pearl ponies and befriend one, but when Captain Hook plans to capture the herd, the Octonauts and Ariel must team up to stop him and save the pearl pony heard before it's too late.

Plot
The episod begins at

Transcript
Captain Barnacles (Narrating): The Octonauts and the Pearl Pony.