Demospongiae are a class of sponges known for their vibrant colors and diverse forms. They possess a skeleton made of spongin fibers and silica spicules. Found in marine and freshwater environments, they play a crucial role in filtering water and providing habitat for marine life.

Demospongiae, a class within the phylum Porifera, is found in marine environments across the globe. They are the most diverse class of sponges, with species distributed in various oceanic regions, including the Atlantic, Pacific, Indian, Southern, and Arctic Oceans. They are also present in some freshwater systems, notably in regions like North America and Europe.

Demospongiae thrive in a wide range of environmental conditions. They are predominantly found in marine environments, from shallow coastal areas to deep sea ecosystems, including coral reefs, mangroves, and seagrass beds. They can inhabit both warm tropical and cold polar waters. Freshwater species are typically found in lakes, rivers, and streams.

As filter feeders, Demospongiae play a crucial ecological role in water filtration, nutrient cycling, and providing habitat for various marine organisms. They often form symbiotic relationships with microorganisms, which can influence their structure and function. Their adaptability to various environmental conditions allows them to occupy diverse ecological niches, contributing to the biodiversity and health of aquatic ecosystems.