This is a non-fiction book on seahorses with some information about sea dragons.
There is only one chapter that mentions sea dragons and there isn't much information on them.
The majority of the book shows great pictures of seashorses and information on the different species.
My child wasn't super interested in this story. But the pictures were of interest to her. This is a follow up choice after reading Mister Seahorse by Erin Carle.