The target of this book are very young people but I think it should be read by people of all ages as we need to know what are the risks and what will happen when there's only silence.
There's a realistic description of what is happening and will happen but there's also hope.
And hope is what can makes wish that the whales will sing for a long time.
Highly recommended.
Many thanks to the publisher and Netgalley for this ARC, all opinions are mine