The term for the study of aquatic organisms is "aquatic biology" or sometimes referred to as "limnology," depending on the focus area. Aquatic biology encompasses the examination of life forms that inhabit freshwater, marine, and other aquatic ecosystems. It includes the study of algae, fish, aquatic plants, and microorganisms, as well as their interactions with the environment. Limnology is more specifically focused on freshwater systems, addressing aspects like their chemistry, biology, and physical characteristics. Both branches are crucial for understanding ecological dynamics and conserving aquatic resources.