Marine and freshwater discovery involves the exploration and study of aquatic ecosystems, including oceans, rivers, lakes, and wetlands. Scientists investigate the diverse life forms, such as fish, plants, and microorganisms, that inhabit these environments. This research helps us understand the ecological balance and the importance of water bodies in supporting life on Earth. The discovery process often includes the use of technology like submersibles and remote sensing tools to gather data. Organizations like NOAA (National Oceanic and Atmospheric Administration) and various universities conduct expeditions to document species and assess the health of aquatic habitats, contributing to conservation efforts and sustainable management of water resources.