Sponges are invertebrate animals that belong to the group of poriferans. They are characterized by their porous structure and their ability to filter water and obtain nutrients from it.
Sponges are mostly marine and come in a variety of shapes, sizes, and colors. They do not have tissues or internal organs, but are composed of specialized cells that perform various functions.
Sponges play an important role in marine ecosystems by providing habitat for other species and contributing to the nutrient cycle.
