Shell, Beak, Tusk: Shared Traits and the Wonders of Adaptation

We think of evolution as a tree with branches that make clear, linear sense—with one animal and its traits clearly derived from one that came before it genetically. But what about animals who share key traits but aren’t on the same family tree? This is called convergent evolution, and it’s the big idea that Bridget Heos tackles in a kid-friendly way in Shell, Beak, Tusk. 

From mammals to reptiles, and everything in between, Heos manages to make some intriguing comparisons—and bring to life theories of evolution and convergentevolution in bite-sized, easily digested chunks of fun facts, illustrated with full-color photography throughout.

Why do so many animals who aren’t related share the same amazing traits?

• Convergent Evolution Explained: Uncover the fascinating science of why unrelated animals—like a porcupine and an echidna—develop similar traits to survive.
• Surprising Animal Comparisons: Explore incredible side-by-side examples, from the shell of a turtle and a snail to the beak of a parrot and an octopus!
• Fun Animal Facts: Packed with bite-sized facts and simple explanations perfect for curious young readers and future biologists.
• Engaging STEM for Kids: A perfect introduction to core biology concepts, brought to life with vibrant, full-color photos.

"A beautiful presentation of a complicated concept, and a great selection for classroom use." –SLJ    "Convergent evolution” sounds like a mouthful for elementary-grade kids, but in this beautifully photo-illustrated volume the concept is clearly explained and entertainingly reinforced..." —Bulletin    "With a concluding rundown of the persistence of repeated traits, a bibliography, and an index, this fine first glimpse at evolution is sure to spark the interest and imaginations of little ones far and wide." — Booklist