👉 An entozoologist is a scientist who studies invertebrates, which are animals that have bodies composed of cells, rather than vertebrates. These include insects, spiders, scorpions, and crustaceans, among others. Entozoologists use various scientific methods to study these organisms, including microscopy, x-ray fluorescence spectroscopy, and molecular biology. They often focus on the evolution and distribution of invertebrate species, as well as their interactions with other organisms in ecosystems.