Octonauts is a children's/youth programmes series airing on UK television.
Barnacles and Kwazii investigate a disturbance on a reef, where they find a carrier crab squabbling with an urchin
Barnacles and Kwazii sneak into a walrus colony to retrieve Peso's medical kit
The crew decides to clean the Octopod, but the noise causes a nearby blue whale to start acting strangely
Peso and the Octonauts help an enormous elephant seal, which then overstays its welcome in the octopod
Peso's little brother Pinto comes to stay and seems more interested in becoming a pirate than a medic, but a mission to rescue Dashi and Shellington soon changes his mind
The crew helps reunite a lost sardine with its friends
Peso competes in an annual tournament - the Iron Clam Competition
The team pursues a school of flying fish that has accidentally taken one of Professor Inkling's rare books
The team searches for Inkling's long-lost cousin, the elusive Giant Squid
The team helps pull an orca back into the water, aided by a group of crabs
Barnacles and the crew chase a runaway Octopod after it is hijacked by a group of crustaceans
The crew tries to catch a thief who has been stealing important objects from the ship
The underwater explorers try to save a coral reef, and receive unexpected help from a pod of dolphins
The explorers use music to lead a group of stranded beluga whales to safety
The team travels up a treacherous river to help a young migrating eel on her difficult journey
Shellington gets lost in a cave, but receives unexpected assistance from some blind remipedes
When all the Gups go out of control, Barnacles and Kwazii round them up by riding on speedy Sailfish
The explorers try to evacuate sea creatures before an underwater volcano erupts, but the slow-moving blobfish prove troublesome