Natural sponges are simple aquatic animals belonging to the phylum Porifera. They are primarily found in marine environments, although some species inhabit freshwater. Sponges have porous bodies that allow water to flow through them, enabling them to filter food particles and oxygen from the water. They come in various shapes, sizes, and colors, and their structure is supported by a skeleton made of either silica or calcium carbonate. These organisms play a crucial role in their ecosystems by providing habitat for other marine life and helping to maintain water quality. Natural sponges are harvested for various uses, including bathing and cleaning, due to their absorbent properties. They are also studied for their potential medicinal benefits, as some species produce compounds that may have therapeutic effects.