Books like The Unnatural History of the Sea
Callum Roberts
The Unnatural History of the Sea is 456 pages, about 8 hours 22 minutes at 250 words a minute.
6 books to read next
How long each takes
Literary Theory 4.5 h 
More Money Than God 8.8 h 
Pacific 9.0 h 
Mussolini's Italy 12.7 h 
Us and Them 6.8 h 
The Outlaw Ocean 10.0 h Bar height shows length. Estimated at 250 words a minute.