What are the statistics for an underwater sponge?

Underwater sponges, belonging to the phylum Porifera, are simple multicellular organisms that can vary greatly in size, shape, and color. They are primarily found in marine environments, with approximately 8,500 known species, though estimates suggest there could be over 15,000 species in total. Sponges play a crucial role in aquatic ecosystems by filtering water, with some capable of filtering several thousand liters per day. They have a unique ability to regenerate, allowing them to recover from damage and survive in various environmental conditions.