In this episode, Patrícia Ferreira, (she/her) a PhD student in the Department of Biological and Chemical Sciences and 2022 WinS Hypatia winner, explains that not all animals have a stomach. Her research explores why the stomach evolved and tries to explain what it does. Her research uses the power of CRISPR gene editing to create fish that have no stomachs and then uses these animal models to explore why organisms have stomachs and what the implications are of having a stomach, or not.