Coral and her mom are enjoying a break at the seaside. Until a creature emerges from the waves! It's a giant. A blue giant. It is made of water, fish, and sea plants and has a stirring plea to help clean up the ocean.

Coral and her mom agree to help, donning their scuba-diving outfits and setting off to sea. But they can't do it alone...can they?

This stunning follow-up to Katie Cottle's debut picture book The Green Giant is another entertaining and beautiful eco-tale from the 2017 winner of the Batsford Prize. It introduces children to the issues of pollution, waste management, and the oceans, with suggestions of lifestyle changes to help clean up our seas.