I started reading this last night and i stopped before finishing the first chapter. I tell you why: 
 Because there is a civilization of intelligent giant lobsters in this book. 
 I'm serious. They are not some side characters in the book for adding humor. No. They are the main people. They are the people who the humans have went to their planet to study. They are giant lobsters who are intelligent and have built a civilization beneath the sea. They hold conferences, they have social structure, economy, science, everything. And they have pincers!! Science-fiction? Anyone who has read a book on evolution knows you can't build a civilization with pincers. 
 It's not a science-fiction book. It's a children's fantasy.