A sea sponge is a simple marine animal belonging to the phylum Porifera. They are primarily found in oceans, living on the sea floor. Sea 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 can be found in both shallow and deep waters. Sea sponges are important for marine ecosystems as they provide habitat for various organisms and help maintain water quality. They reproduce both sexually and asexually, with some species capable of regenerating from small fragments. Their unique structure and ability to filter water make them valuable in scientific research and potential medical applications.