sponges are naturally grown in the ocean floor and then harvested and dried to be used.
Foam.
No, kitchen sponges nowadays are usually made from cellulose or synthetic plastics. Real marine sponges were used by early Europeans to also clean, but it was stopped due to overfishing that almost brought the sponges to extinction.
Man made sponges or artificial sponges were developed first by the DuPont company. Sponges were manufactured first in 1940. They also invented nylon.
Skeleton made up of spicule supports most sponges .
what is s.o.s made sponge made of
Synthetic (or man made) sponges were first developed and produced by Du Point in 1942.
The first sponges were natural. They are some of the oldest animals to ever live on earth.
rocks! im not kidding!
in the 1930's
1999 by Steven Hillenburg
sponges
sponges are made up of individual cells. I dont know about colentrates. They just are what they are. sponges also don't move while coelenterates do.