Currently available on 3 streaming services.

Streaming, rent, or buy Octonauts – Season 4:

Currently you are able to watch "Octonauts - Season 4" streaming on Netflix, Netflix Kids, Netflix basic with Ads.

Cast

Ross Breen
Captain Barnacles
Keith Wickham
Shellington
Jo Wyatt
Tweak
Rob Rackstraw
Kwazii
Teresa Gallagher
Dashi
Paul Panting
Peso
Michael Murphy
Vegimals