Porifera, commonly known as sponges, are simple aquatic animals that primarily live in marine environments. They have a porous body structure, allowing water to flow through them, which helps in feeding, respiration, and waste removal. Sponges lack true tissues and organs, making them unique among animals. These organisms come in various shapes and sizes, often resembling colorful, soft structures attached to rocks or coral. Porifera play a crucial role in their ecosystems by filtering water and providing habitat for other marine life. Their ability to regenerate also makes them fascinating subjects for scientific research.