yes
The ocean (aquatic biome).
Until about 200 years ago people thought that sponges were aquatic plants.
ostium
As far as officials know, most sponges are not endangered. Very few aquatic sponges are harvested and this small number is not large enough to have an effect on their population. There are over 5000 varieties of known sponges and only some fresh water sponges are known to be in danger at this time.
Nearly all most all of the 5,000 known sponges are found in saltwater; however, 150 species live in freshwater.
sea sponges are found in mostly in salt water, but a few live in fresh water.
Sponges live in saltwater lakes, sea, and oceans. Some sponges live in freshwater.
No. Sponges are the simplest animals and they are aquatic and sessile (attached to a substrate). A slug is in the Phylum Mollusca in the Class Gastropoda.
Choanocytes (also known as "collar cells"). Choanocytes are found dotting the surface of the spongocoel in asconoid sponges and the radial canals in syconoid sponges, but they comprise entirely the chambers in leuconoid sponges.
fresh water
More aquatic plants are found at marshy places of subtropical zones.