Join CBeebies for an ocean adventure travelling the musical world in the Royal Albert Hall submarine to find endangered creatures and tackle tricky environmental problems. Andy, Chantelle, Jen, Maddie, Nigel and Rory are on board RA Sub with a marvellous musical crew, the Southbank Sinfonia, led by captain and conductor Kwamé Ryan. JoJo helps with a Gran Gran plan to make a musical ocean scrapbook, the Go Jetters rescue a hawksbill turtle and Andy jets off on an Aquatic Adventure to find humpb...