The ocean is large and marine biologists work in many subfields like zoology, invertebrate, ichthyology, and physiology. Other subfields study physical traits like scales, scales, or eyes. Biologists also study [[animal behavior]]. | The ocean is large and marine biologists work in many subfields like zoology, invertebrate, ichthyology, and physiology. Other subfields study physical traits like scales, scales, or eyes. Biologists also study [[animal behavior]]. |