BIT OF POND GROWTH is a term used to describe an ALGA, which is a type of organism that lives in water and can range from single-celled organisms to complex multicellular forms. Algae are photosynthetic, meaning they use sunlight to produce energy, and are found in both freshwater and saltwater environments. They are an important part of the food chain, providing food for many aquatic animals, and are also used in some industries for their oil and other products.