Animated deep sea adventure series. Captain Barnacles and his intrepid band of explorers roam the oceans in search of adventure and fun. Whether it's a perilous voyage to the bottom of the sea or the piratey pursuit of a giant squid, the Octonauts leap into action and always prove that eight heads are better than one. When Captain Barnacles and most of the crew are unable to return to base, it's up to Peso and Tweak to remove a stuck Hermit Crab from its shell.