Why Do Fish Have Gills? And Other Questions About Evolution and Classification

Exploring the world beneath the waves, the book explains why fish have gills and how scientists sort them into different groups. Young readers discover how fish have evolved special features such as swim bladders, fins, and body shapes to survive in a variety of habitats. The text also highlights the differences between flatfish, catfish, eels, and other species, using clear diagrams and vibrant photographs. Through simple explanations and engaging visuals, it guides children through the basics of evolution and classification without overwhelming them.