Upcoming episodes, programme details and where to watch over the next seven days. All times are UK time.
Warm temperatures wake up some hibernating dormice, and the Octonauts must protect them.
The Octonauts find some lost eggs in a nest off the coast and search for the mother.
When birds cause trouble aboard the Octoray, Tweak uses her Octowatch to help with repairs
When Kwazii and Calico Jack get stranded on an island, the Octonauts must search for them.
The Octonauts guide migrating monarch butterflies on a journey south for the winter.
Rising seas send Calico Jack and Kwazii on a hunt, where they encounter a sand cat.
While testing out the new Terra-Gup 6, Tweak crash lands in the desert.