Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Severely inferior to the Oz books

This book is a real let down after reading all the Oz Books. It doesn't have anywhere near the sparkle and pop of Baum's other series and seems much more like a list of what-could-be sightings than a worthwhile story. That's truly a shame because I was hoping to "keep the magic alive" (as it were) for my young children after finishing all the Oz books.The story line is simple - Trot and Cap'n Bill (both migrated to Oz after a few more books) are temporarily transformed into a mermaid & merman for undersea adventures. They get captured by an evil wizard and eventually freed. The drawback is that the sea offers less of a chance for Oz's remarkable imagination since he has to work with observable items and make them seem fantastical. He just doesn't have as much room to work with as he does in Oz, which offers boundless opportunities for his near-endless imagination.Maybe a Baum completist would enjoy this more, but it wasn't for me.