A Reasonable World - Damon Knight - Bog

Sequel to CV and The Observers. After invading Sea Venture, Earth's largest ocean habitat, the Symbionts have infected the bodies of both humans and animals. Now, people become smarter-or they die. Violence is punished by instant execution from within. But there are those who would turn back the clock-to prevent a reasonable world. 3rd in the CV series from Damon Knight, a SFWA Grand Master.