Other than its skin, nothing.
sponges, their zooxanthellae and smaller organisms for protection
It is a spongia
filter feeders! : )
Sponges
none
Sponges
Sponges use internal fertilization in their reproductive process.
They do not really have protection. Most of them have s soft outsides and do not really have any self defense mechanisum.
Sponges are asymmetrical, although a few species have nearly radial symmetry.
What kind of behaviors do sponges inherit sponges inherit behaviors such as courtship, having baby sponges, and the features of the parents
Yes. They can release spikes. When a potential predator touches a spike, it releases poison.
There are many types of sponges you can use for cleaning. Examples of these are cellulose sponges, abrasive sponges, natural sponges, and dry sponges. The best one would depend on the cleaning surface. It is best to use soft sponges such as the natural sponge to clean fragile surfaces. To clean rough surfaces an abrasive sponge would do the trick.