This book is very short: only 160 actual pages - the rest is made up of inserts of wavelet diagrams of whale/dolphin songs on thick card. Not much of the book is actually about the messages from the dolphins and whales, but instead a rant about how bad humans are, a recount of the author's experiences and an interview with the creator of the wavelet art.
I was expecting that the dolphins would have some information to share with us, but most of it is just lamenting about how much better it was during the time of Atlantis and Mu and about how they all want to commit suicide because the humans are destroying their world. The book contains annoying inaccuracies, such as the myth that humans only use x% of their brains, which makes me wonder how much of what the author is saying is an exaggeration. In the book she also states how orcas are known to attack humpback whales, which seems to go against her theory of how 'spiritual' both these creatures are, which she does not give explanation for. Neither does the book give any advice on what we can do to actually help save these animals.
On the positive side, I have enjoyed the emotional (short) story, the message and the interview contained in this book, and feel that it has let me get into the mindset of the whale and dolphin beings.