Mark J. Harasymiw 
Bizarre Life Cycle of a Salmon [PDF ebook] 

Only about 10 percent of salmon offspring live to the second stage of the fish’s life cycle. Even stranger, they sometimes develop a hump or large teeth before reproducing. Readers learn these bizarre facts and more with colorful photographs and fact boxes detailing other weird salmon information. Written in age-appropriate language, the engaging text introduces readers to important science concepts and includes graphic organizers to aid understanding.