In the depths of the sea, for over thousands of year, porous solid masses have developed which are mainly sea zoophytes and show a great absorbent ability. These are spongous or as they are commonly known, sponges. They are applied mainly in pharmaceutical, household and personal hygiene.
The natural sponge belongs to the genus of porifera. It is found in various areas of the sea mainly in lukewarm water where there are mild sea currents and at various depths.
Aristotle was the first to observe the presence of animal senses in sponges. Therefore, he categorized them in the animal kingdom.