Books like The Dolphins of Pern
Anne McCaffrey
The Dolphins of Pern is 340 pages, about 6 hours 14 minutes at 250 words a minute.
12 books to read next
How long each takes
Dragonheart 12.0 h 
Old Man’s War 5.7 h 
Revelation Space 10.3 h 
The Last Colony 5.9 h 
Star Wars - Dawn of the Jedi - Into the Void 6.5 h 
Matter 10.9 h 
Shadow of the Giant 6.8 h 
Chasm City 11.2 h 
Dragonsblood 8.8 h 
The End of All Things 7.0 h 
The Dreaming Void 11.9 h 
Fuzzy Nation 5.6 h Bar height shows length. Estimated at 250 words a minute.