Inspired by artwork by Theo Steynor, Bertle the Turtle tells the story of Bertle and his three young children as they explore a colourful coral reef together. The right-hand arpeggiated triads represent the children swimming playfully through the water, while Bertle himself is a slow-moving melodic line beneath them, guiding their journey.
 
When Bertle suddenly finds himself flipped onto his back, the family is thrown into confusion. As he struggles helplessly, his children work together to help him, discovering that by combining their efforts they can achieve remarkable things. Their movements unite into a single musical gesture as they lift Bertle back into position, before the opening music returns and the family continues their journey.