Wendy Pfeffer is the author of several titles in the Let's-Read-and-Find-Out Science series, including From Tadpole to Frog , What's It Like to Be a Fish? , From Seed to Pumpkin , Sounds All Around , Wiggling Worms at Work , Dolphin Talk , and Life in a Coral Reef . She lives in Pennington, New Jersey.
Holly Keller is the author-illustrator of more than thirty-five books for young children including the Horace books, Farfallina and Marcel, Help!, and Grandfather's Dream. She has also illustrated over twenty nonfiction titles written by others including the Let's-Read-and-Find-Out Science Books series. She won the 2003 Charlotte Zolotow Award.