- This doesn't have a nervous system
- The Demospongiae is the most diverse sponge group
- Greater than 90 percent of the 5,000 known living sponge species are demo-sponges
- Many of these sponges dpi not possess skeletons that would easily fossilize, therefore the fossil diversity is an underestimate of their true diversity
- They are found in many different environments such as warm high-energy settings to quiet, cold abyssal depths
- All of the know freshwater poriferans are demo-sponges
- The Demospongiae is the most diverse sponge group
- Greater than 90 percent of the 5,000 known living sponge species are demo-sponges
- Many of these sponges dpi not possess skeletons that would easily fossilize, therefore the fossil diversity is an underestimate of their true diversity
- They are found in many different environments such as warm high-energy settings to quiet, cold abyssal depths
- All of the know freshwater poriferans are demo-sponges