Ep 10. The Speedy Sailfish

The Octonauts season 1 episode 10, titled "The Speedy Sailfish," sees Captain Barnacles, Kwazii, and Peso set out on a mission to explore the deep ocean and locate a group of fast-swimming sailfish. As they navigate through the waters, they discover that the sailfish are being hunted by a group of speedy swordfish, who are endangering both the sailfish and the Octonauts' mission.

With the help of their trusty GUP-A vehicle, the Octonauts attempt to track down the swordfish and put an end to their dangerous behavior. However, as they get closer to the swordfish, they realize that they are facing a daunting challenge, as the swordfish are just as fast and agile as the sailfish.

Despite the odds against them, the Octonauts refuse to give up and continue to pursue the swordfish until they are able to find a way to stop them from hunting the sailfish. Along the way, they face a number of obstacles and challenges, including dangerous underwater currents, unexpected obstacles, and a variety of sea creatures that they must navigate around and avoid.

In the end, the Octonauts are able to successfully track down the swordfish and convince them to stop hunting the sailfish. Through their bravery and determination, the Octonauts once again prove that they are capable of accomplishing any mission that they set their minds to, and that they are always willing to put themselves in danger to protect the creatures of the deep ocean.